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405 relations: A-35 anti-ballistic missile system, A.C. Cossor, Abram A. Slutskin, Abram Ioffe, Acoustics, Adolf Hitler, Aegis Combat System, Air chief marshal, Air Ministry, Air traffic control, Airborne Interception radar, Airport surveillance radar, Aksel Berg, Alan Blumlein, Alaska, Albert H. Taylor, Albert Rowe (physicist), Albert W. Hull, Alberta Hail Project, Albuquerque, New Mexico, Aldershot, Alexander Stepanovich Popov, Allies of World War II, American Meteorological Society, AN/APS-2, AN/SPY-1, Annalen der Physik, Antenna (radio), Arecibo Observatory, Arnold Wilkins, Asteroid, Atmospheric convection, Atmospheric sounding, Attack on Pearl Harbor, Australia, Australian Army, Azimuth, Back-of-the-envelope calculation, Baffin Island, Baltic Sea, Barkhausen–Kurz tube, Basil Schonland, Battle of Britain, Battle of Port Arthur, Battle of the Beams, Bawdsey Manor, BBC, Bell Labs, Benito Mussolini, Berkshire, ..., Berlin, Bernard Lovell, Bistatic radar, Black Sea, Budapest University of Technology and Economics, C band (IEEE), Camille Gutton, Canada, Canadian Army, Canadian weather radar network, Carnegie Institution for Science, Cathode ray tube, Cavity magnetron, Chain Home, Charles Samuel Franklin, Christchurch, Christian Hülsmeyer, Civil aviation, Cobra Mist, Coherer, Cold War, Committee for the Scientific Survey of Air Defence, Commonwealth of Nations, Compagnie générale de la télégraphie sans fil, Computer, Constant altitude plan position indicator, Countermeasure, CXAM radar, Cylinder, Darwin, Northern Territory, Daventry, David Atlas, Death ray, Delft University of Technology, Department of Scientific and Industrial Research (United Kingdom), Dielectric, Dielectric heating, Diffraction, Digital signal processing, Dipole, Dipole antenna, Direction finding, Directional antenna, Distant Early Warning Line, Doppler effect, Doppler radar, Duga radar, Dunay radar, Duplexer, Durban, Echo, Edward George Bowen, Eindhoven, Electrical conductor, Electromagnetic radiation, Electromagnetism, Elevation, EMI, Engineering Research Center for Collaborative Adaptive Sensing of the Atmosphere, Environment and Climate Change Canada, Ernest Marsden, Espionage, Federal Aviation Administration, Federal government of the United States, Fort Monmouth, Fort Monroe, Fourier transform, France, Frederick Lindemann, 1st Viscount Cherwell, Frequency modulation, Freya radar, Geminids, General Electric, General Electric Company, Germany, Goniometer, Goodyear Aerospace, Grand Forks Air Force Base, Great Depression, Great Purge, Gregory Breit, Ground-controlled interception, Ground-penetrating radar, Guglielmo Marconi, Gulag, H2S (radar), H2X, Halifax Harbour, Hampshire, Handley Page Heyford, Hans Hollmann, Hanscom Air Force Base, Harmonic analysis, Harold A. Zahl, Harry Boot, Hawaii, Heinrich Hertz, Henry Tizard, Hidetsugu Yagi, High frequency, History of radar, History of smart antennas, HMS Mercury (shore establishment), HMS Rodney (29), Holography, Horizon, Hugh Dowding, Hungary, Ice pellets, Identification friend or foe, Imperial Japanese Navy, Imperial Russian Navy, Infrared, Intercontinental ballistic missile, Ionosphere, Italian Fascism, Italian Naval Academy, Italy, J. S. Marshall Radar Observatory, Jack Piddington, Jagadish Chandra Bose, James Clerk Maxwell, Japan, Japan Radio Company, Jodrell Bank Observatory, Johannesburg, John Randall (physicist), Joseph Stalin, Katsuura, Chiba, Kenjiro Takayanagi, Kharkiv, Kiel, King City weather radar station, Kinjiro Okabe, Klystron, Kriegsmarine, Kronstadt, Laser, Laser Doppler velocimetry, Lawrence A. Hyland, Leiden University, Leo C. Young, LGM-30 Minuteman, Lidar, Light, Lightning, Line-of-sight propagation, List of German inventors and discoverers, List of World War II electronic warfare equipment, Livorno, Lobe switching, Local oscillator, Location, London, Low frequency, Low-noise amplifier, Luftwaffe, Malvern, Worcestershire, Mars, Mars Express, Marsdiep, Massachusetts Institute of Technology, Météo-France, McGill University, Meguro, Merle Tuve, Mesoscale meteorology, Met Office, Meteorology, Metropolitan-Vickers, Microsecond, Microwave, Mid-Canada Line, Mikhail Aleksandrovich Bonch-Bruevich, Missile launch facility, MIT Lincoln Laboratory, MIT Radiation Laboratory, Monopulse radar, National Oceanic and Atmospheric Administration, National Research Council (Canada), National Science Foundation, National Severe Storms Laboratory, National University of Kharkiv, National Weather Service, NATO, Naval mine, Navy, Nazi Germany, Nazism, NEC, Nello Carrara, Netherlands, New York City, New Zealand, NEXRAD, NHK, Night fighter, Nikolay Devyatkov, North Dakota, North Sea, Northamptonshire, Oahu, Oklahoma City, Oliver Lodge, Operation Paperclip, Orford Ness, Oscilloscope, Over-the-horizon radar, Parabolic antenna, Parabolic reflector, Passive electronically scanned array, Paul E. Watson, Pavel K. Oshchepkov, Peninsula, Phased array, Philips, Philips Natuurkundig Laboratorium, Physicist, Picosecond, Pinetree Line, Plan position indicator, Polarization (waves), Portsmouth, Potomac River, Primary mirror, Project Diana, Project Nike, Proportionality (mathematics), Pulse repetition frequency, Pulse-Doppler radar, Radar, Radar astronomy, Radar gun, Radar picket, Radio astronomy, Radio direction finder, Radio navigation, Radio receiver, Radio telescope, Radio wave, RCA, Red Army, Reflectance, Regenerative circuit, Remote sensing, Ring oscillator, Robert Morris Page, Robert Watson-Watt, Rome, Royal Air Force, Royal Australian Air Force, Royal Canadian Navy, Royal Netherlands Navy, Royal New Zealand Air Force, Royal New Zealand Navy, Rudolf Kühnhold, Russia, Russian Academy of Sciences, Russian Navy, Russian Revolution, S band, Safeguard Program, Saint Petersburg, Satellite, Saturn, SCR-268 radar, SCR-270, Sea of Japan, Searchlight, Secondary mirror, Secrets of Radar Museum, Seetakt, Semion Braude, Sevastopol, Shintaro Uda, Ship, Shortwave radio, Shuttle Radar Topography Mission, Signal Corps (United States Army), Signal Corps Laboratories, Signals Research and Development Establishment, Slough, South Africa, South African Defence Force, Soviet Air Defence Forces, Soviet cruiser Molotov, Soviet Union, Spark gap, Spark-gap transmitter, Sputnik 1, SS Normandie, Stratus cloud, Suffolk, Superheterodyne receiver, Supermarine Scapa, Surface wave, Synthetic-aperture radar, Telecommunications Research Establishment, Telefunken, Thames Estuary, The Hague, The Secret War (TV series), Thunderstorm, Titan (moon), Tizard Mission, Tohoku University, Tokyo Bay, Tokyo Institute of Technology, Tornado vortex signature, Toulon, Transponder (aeronautics), Traveling-wave tube, Triangulation, Tripartite Pact, U-boat, Ukraine, Ultra high frequency, Ultra-wideband, Union City, Oklahoma, United Kingdom, United States, United States Air Force, United States Department of War, United States Naval Research Laboratory, United States Secretary of War, University of Birmingham, University of Canterbury, University of Manchester, University of Sydney, University of the Witwatersrand, USS Leary (DD-158), USS New York (BB-34), Velocity, Very high frequency, W. A. S. Butement, Watt, Würzburg radar, Weather radar, Wellington, Wembley, Western Electric, Westinghouse Electric Corporation, Wilhelm Runge, William R. Blair, Winston Churchill, Wireless telegraphy, World War II, WSR-1, WSR-57, WSR-74, XAF radar, Yagi–Uda antenna, Yoji Ito, Zoltán Lajos Bay, 955 acorn triode. Expand index (355 more) »
A-35 anti-ballistic missile system
The A-35 anti-ballistic missile system was a Soviet military anti-ballistic missile (ABM) system deployed around Moscow to intercept enemy ballistic missiles targeting the city or its surrounding areas.
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A.C. Cossor
A.C. Cossor Ltd. was a British electronics company founded in 1859.
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Abram A. Slutskin
Abram A. Slutskin (1881–1950) was a Russian scientist and professor who had a major role in shaping radio science in the Soviet Union.
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Abram Ioffe
Abram Fedorovich Ioffe (p; – 14 October 1960) was a prominent Russian/Soviet physicist.
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Acoustics
Acoustics is the branch of physics that deals with the study of all mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound.
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Adolf Hitler
Adolf Hitler (20 April 1889 – 30 April 1945) was a German politician, demagogue, and revolutionary, who was the leader of the Nazi Party (Nationalsozialistische Deutsche Arbeiterpartei; NSDAP), Chancellor of Germany from 1933 to 1945 and Führer ("Leader") of Nazi Germany from 1934 to 1945.
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Aegis Combat System
The Aegis Combat System is an American integrated naval weapons system developed by the Missile and Surface Radar Division of RCA, and now produced by Lockheed Martin.
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Air chief marshal
Air chief marshal (Air Chf Mshl or ACM) is a four-star air officer rank which originated in and continues to be used by the Royal Air Force, where it is the most senior peacetime air force rank.
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Air Ministry
The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force, that existed from 1918 to 1964.
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Air traffic control
Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through controlled airspace, and can provide advisory services to aircraft in non-controlled airspace.
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Airborne Interception radar
Airborne Interception radar, or AI for short, is the British term for radar systems used to equip aircraft in the air-to-air role.
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Airport surveillance radar
An airport surveillance radar (ASR) is a radar system used at airports to detect and display the presence and position of aircraft in the terminal area, the airspace around airports.
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Aksel Berg
Aksel Ivanovich Berg (Orenburg 1893 – Moscow 1979) was a Soviet scientist and Navy Admiral (in Engineering).
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Alan Blumlein
Alan Dower Blumlein (29 June 1903 – 7 June 1942) was an English electronics engineer, notable for his many inventions in telecommunications, sound recording, stereophonic sound, television and radar.
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Alaska
Alaska (Alax̂sxax̂) is a U.S. state located in the northwest extremity of North America.
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Albert H. Taylor
Albert Hoyt Taylor (January 1, 1879 in Chicago, IL – December 11, 1961 in Los Angeles, CA) was an American electrical engineer who made important early contributions to the development of radar.
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Albert Rowe (physicist)
Albert Percival Rowe, CBE (23 March 1898 – 25 May 1976), often known as Jimmy Rowe or A. P. Rowe, was a radar pioneer and university vice-chancellor.
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Albert W. Hull
Albert Wallace Hull (19 April 1880 – 22 January 1966) is an American physicist and electrical engineer who made contributions to the development of vacuum tubes, and invented the magnetron.
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Alberta Hail Project
The Alberta Hail Project was a research project sponsored by the Alberta Research Council and Environment Canada to study hailstorm physics and dynamics in order to design and test means for suppressing hail.
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Albuquerque, New Mexico
Albuquerque (Beeʼeldííl Dahsinil; Arawageeki; Vakêêke; Gołgéeki) is the most populous city in the U.S. state of New Mexico.
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Aldershot
Aldershot is a town in the Rushmoor district of Hampshire, England.
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Alexander Stepanovich Popov
Alexander Stepanovich Popov (sometimes spelled Popoff; Алекса́ндр Степа́нович Попо́в; –) was a Russian physicist who is acclaimed in his homeland and some eastern European countries as the inventor of radio.
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Allies of World War II
The Allies of World War II, called the United Nations from the 1 January 1942 declaration, were the countries that together opposed the Axis powers during the Second World War (1939–1945).
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American Meteorological Society
The American Meteorological Society (AMS) is the premier scientific and professional organization in the United States promoting and disseminating information about the atmospheric, oceanic, and hydrologic sciences. Its mission is to advance the atmospheric and related sciences, technologies, applications, and services for the benefit of society.
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AN/APS-2
The AN/APS-2 radar began as a military aircraft radar.
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AN/SPY-1
The AN/SPY-1 is a US naval 3D radar system manufactured by Lockheed Martin.
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Annalen der Physik
Annalen der Physik (English: Annals of Physics) is one of the oldest scientific journals on physics and has been published since 1799.
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Antenna (radio)
In radio, an antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.
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Arecibo Observatory
The Arecibo Observatory is a radio telescope in the municipality of Arecibo, Puerto Rico.
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Arnold Wilkins
Arnold Frederic Wilkins OBE (20 February 1907 – 5 August 1985) was a pioneer in developing the use of radar.
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Asteroid
Asteroids are minor planets, especially those of the inner Solar System.
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Atmospheric convection
Atmospheric convection is the result of a parcel-environment instability, or temperature difference, layer in the atmosphere.
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Atmospheric sounding
An atmospheric sounding is a measurement of vertical distribution of physical properties of the atmospheric column such as pressure, temperature, wind speed and wind direction (thus deriving wind shear), liquid water content, ozone concentration, pollution, and other properties.
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Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service against the United States naval base at Pearl Harbor, Hawaii Territory, on the morning of December 7, 1941.
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Australia
Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.
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Australian Army
The Australian Army is Australia's military land force.
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Azimuth
An azimuth (from the pl. form of the Arabic noun "السَّمْت" as-samt, meaning "the direction") is an angular measurement in a spherical coordinate system.
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Back-of-the-envelope calculation
A back-of-the-envelope calculation is a rough calculation, typically jotted down on any available scrap of paper such as an envelope.
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Baffin Island
Baffin Island (ᕿᑭᖅᑖᓗᒃ, Qikiqtaaluk, Île de Baffin or Terre de Baffin), in the Canadian territory of Nunavut, is the largest island in Canada and the fifth largest island in the world.
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Baltic Sea
The Baltic Sea is a sea of the Atlantic Ocean, enclosed by Scandinavia, Finland, Estonia, Latvia, Lithuania, Russia, Poland, Germany and the North and Central European Plain.
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Barkhausen–Kurz tube
The Barkhausen–Kurz tube, also called the retarding-field tube, reflex triode, B–K oscillator, and Barkhausen oscillator was a high frequency vacuum tube electronic oscillator invented in 1920 by German physicists Heinrich Georg Barkhausen and Karl Kurz.
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Basil Schonland
Sir Basil Ferdinand Jamieson Schonland OMG CBE FRS (2 February 1896 – 24 November 1972) was noted for his research on lightning, his involvement in the development of radar during World War II and for being the first president of the South African Council for Scientific and Industrial Research.
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Battle of Britain
The Battle of Britain (Luftschlacht um England, literally "The Air Battle for England") was a military campaign of the Second World War, in which the Royal Air Force (RAF) defended the United Kingdom (UK) against large-scale attacks by Nazi Germany's air force, the Luftwaffe.
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Battle of Port Arthur
The of Monday 8 February – Tuesday 9 February 1904 marked the commencement of the Russo-Japanese War.
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Battle of the Beams
The Battle of the Beams was a period early in the Second World War when bombers of the German Air Force (Luftwaffe) used a number of increasingly accurate systems of radio navigation for night bombing in the United Kingdom.
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Bawdsey Manor
Bawdsey Manor stands at a prominent position at the mouth of the River Deben close to the village of Bawdsey in Suffolk, England, about northeast of London.
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BBC
The British Broadcasting Corporation (BBC) is a British public service broadcaster.
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Bell Labs
Nokia Bell Labs (formerly named AT&T Bell Laboratories, Bell Telephone Laboratories and Bell Labs) is an American research and scientific development company, owned by Finnish company Nokia.
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Benito Mussolini
Benito Amilcare Andrea Mussolini (29 July 1883 – 28 April 1945) was an Italian politician and journalist who was the leader of the National Fascist Party (Partito Nazionale Fascista, PNF).
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Berkshire
Berkshire (abbreviated Berks, in the 17th century sometimes spelled Barkeshire as it is pronounced) is a county in south east England, west of London and is one of the home counties.
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Berlin
Berlin is the capital and the largest city of Germany, as well as one of its 16 constituent states.
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Bernard Lovell
Sir Alfred Charles Bernard Lovell (31 August 19136 August 2012) was an English physicist and radio astronomer.
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Bistatic radar
Bistatic radar is the name given to a radar system comprising a transmitter and receiver that are separated by a distance comparable to the expected target distance.
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Black Sea
The Black Sea is a body of water and marginal sea of the Atlantic Ocean between Eastern Europe, the Caucasus, and Western Asia.
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Budapest University of Technology and Economics
The Budapest University of Technology and Economics (Budapesti Műszaki és Gazdaságtudományi Egyetem or in short italic), official abbreviation BME, is the most significant University of Technology in Hungary and is considered the world's oldest Institute of Technology which has university rank and structure.
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C band (IEEE)
The C-band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 4.0 to 8.0 gigahertz (GHz); however, this definition is the one used by radar manufacturers and users, not necessarily by microwave radio telecommunications users.
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Camille Gutton
Camille Gutton (30 August 1872 – 19 August 1963) was a French physicist who specialized in radioelectricity.
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Canada
Canada is a country located in the northern part of North America.
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Canadian Army
The Canadian Army (French: Armée canadienne) is the command responsible for the operational readiness of the conventional ground forces of the Canadian Armed Forces.
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Canadian weather radar network
The Canadian weather radar network consists of 31 weather radars spanning Canada's most populated regions.
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Carnegie Institution for Science
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research.
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Cathode ray tube
The cathode ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images.
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Cavity magnetron
The cavity magnetron is a high-powered vacuum tube that generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of open metal cavities (cavity resonators).
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Chain Home
Chain Home, or CH for short, was the codename for the ring of coastal Early Warning radar stations built by the Royal Air Force (RAF) before and during the Second World War to detect and track aircraft.
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Charles Samuel Franklin
Charles Samuel Franklin (1879–1964), who published as C. S. Franklin, was a noted British radio pioneer.
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Christchurch
Christchurch (Ōtautahi) is the largest city in the South Island of New Zealand and the seat of the Canterbury Region.
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Christian Hülsmeyer
Christian Hülsmeyer (Huelsmeyer) (25 December 1881 – 31 January 1957) was a German inventor, physicist and entrepreneur.
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Civil aviation
Civil aviation is one of two major categories of flying, representing all non-military aviation, both private and commercial.
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Cobra Mist
Cobra Mist was the codename for an Anglo-American experimental over-the-horizon radar station at Orford Ness, Suffolk, England.
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Coherer
The coherer was a primitive form of radio signal detector used in the first radio receivers during the wireless telegraphy era at the beginning of the 20th century.
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Cold War
The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).
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Committee for the Scientific Survey of Air Defence
The Committee for the Scientific Survey of Air Defence (CSSAD), also known as the Tizard Committee after its chairman, Henry Tizard, was a pre-World War II scientific mission to study the needs of anti-aircraft warfare in the UK.
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Commonwealth of Nations
The Commonwealth of Nations, often known as simply the Commonwealth, is an intergovernmental organisation of 53 member states that are mostly former territories of the British Empire.
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Compagnie générale de la télégraphie sans fil
The Compagnie générale de la télégraphie sans fil (CSF: General Wireless Telegraphy Company) was a French company founded in 1918 during a reorganization and expansion of the Société française radio-électrique (SFR), which became a subsidiary.
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Computer
A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
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Constant altitude plan position indicator
The constant altitude plan position indicator, better known as CAPPI, is a radar display which gives a horizontal cross-section of data at constant altitude.
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Countermeasure
A countermeasure is a measure or action taken to counter or offset another one.
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CXAM radar
The CXAM radar system was the first production radar system deployed on United States Navy ships, operating in the mid-high VHF frequency band of 200 MHz.
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Cylinder
A cylinder (from Greek κύλινδρος – kulindros, "roller, tumbler"), has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes.
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Darwin, Northern Territory
Darwin is the capital city of the Northern Territory of Australia.
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Daventry
Daventry (historically) is a market town in Northamptonshire, England, with a population of 25,026.
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David Atlas
David Atlas (May 25, 1924 – November 10, 2015) was an American meteorologist and one of the pioneers of radar meteorology.
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Death ray
The death ray or death beam was a theoretical particle beam or electromagnetic weapon of the 1920s and 1930s that was claimed to have been invented independently by Guglielmo Marconi, Nikola Tesla, Harry Grindell Matthews, Edwin R. Scott, and Graichen, as well as others.
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Delft University of Technology
Delft University of Technology (Technische Universiteit Delft) also known as TU Delft, is the largest and oldest Dutch public technological university, located in Delft, Netherlands.
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Department of Scientific and Industrial Research (United Kingdom)
The Department of Scientific and Industrial Research was a department of the British Government responsible for the organisation, development and encouragement of scientific and industrial research.
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Dielectric
A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field.
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Dielectric heating
Dielectric heating, also known as electronic heating, RF (radio frequency) heating, and high-frequency heating, is the process in which a radio frequency alternating electric field, or radio wave or microwave electromagnetic radiation heats a dielectric material.
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Diffraction
--> Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit.
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Digital signal processing
Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations.
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Dipole
In electromagnetism, there are two kinds of dipoles.
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Dipole antenna
In radio and telecommunications a dipole antenna or doublet is the simplest and most widely used class of antenna.
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Direction finding
Direction finding (DF), or radio direction finding (RDF), is the measurement of the direction from which a received signal was transmitted.
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Directional antenna
A directional antenna or beam antenna is an antenna which radiates or receives greater power in specific directions allowing increased performance and reduced interference from unwanted sources.
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Distant Early Warning Line
The Distant Early Warning Line, also known as the DEW Line or Early Warning Line, was a system of radar stations in the far northern Arctic region of Canada, with additional stations along the North Coast and Aleutian Islands of Alaska, in addition to the Faroe Islands, Greenland, and Iceland.
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Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.
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Doppler radar
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance.
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Duga radar
Duga (Дуга) was a Soviet over-the-horizon (OTH) radar system used as part of the Soviet anti-ballistic missile early-warning network.
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Dunay radar
Dunay radar (Dunay literally Danube; NATO: Cat House, Dog House) was a system of two Soviet radars used to detect American ballistic missiles fired at Moscow.
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Duplexer
A duplexer is an electronic device that allows bi-directional (duplex) communication over a single path.
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Durban
Durban (eThekwini, from itheku meaning "bay/lagoon") is the largest city in the South African province of KwaZulu-Natal and the third most populous in South Africa after Johannesburg and Cape Town.
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Echo
In audio signal processing and acoustics, Echo is a reflection of sound that arrives at the listener with a delay after the direct sound.
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Edward George Bowen
Edward George 'Taffy' Bowen, CBE, FRS (14 January 1911 – 12 August 1991) was a Welsh physicist who made a major contribution to the development of radar, and so helped win both the Battle of Britain and the Battle of the Atlantic.
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Eindhoven
Eindhoven is a municipality and city in the south of the Netherlands, originally at the confluence of the Dommel and Gender streams.
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Electrical conductor
In physics and electrical engineering, a conductor is an object or type of material that allows the flow of an electrical current in one or more directions.
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Electromagnetic radiation
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.
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Electromagnetism
Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.
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Elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum).
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EMI
EMI Group Limited (originally an initialism for Electric and Musical Industries and also referred to as EMI Records Ltd.) was a British multinational conglomerate founded in March 1931 in London.
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Engineering Research Center for Collaborative Adaptive Sensing of the Atmosphere
The Engineering Research Center for Collaborative Adaptive Sensing of the Atmosphere (CASA) is a National Science Foundation Engineering Center.
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Environment and Climate Change Canada
Environment and Climate Change Canada (or simply its former name, Environment Canada, or EC) (Environnement et Changement climatique Canada), legally incorporated as the Department of the Environment under the Department of the Environment Act (R.S., 1985, c. E-10), is the department of the Government of Canada with responsibility for coordinating environmental policies and programs as well as preserving and enhancing the natural environment and renewable resources.
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Ernest Marsden
Sir Ernest Marsden (19 February 1889 – 15 December 1970) was an English-New Zealand physicist.
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Espionage
Espionage or spying, is the act of obtaining secret or confidential information without the permission of the holder of the information.
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Federal Aviation Administration
The Federal Aviation Administration (FAA) of the United States is a national authority with powers to regulate all aspects of civil aviation.
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Federal government of the United States
The federal government of the United States (U.S. federal government) is the national government of the United States, a constitutional republic in North America, composed of 50 states, one district, Washington, D.C. (the nation's capital), and several territories.
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Fort Monmouth
Fort Monmouth is a former installation of the Department of the Army in Monmouth County, New Jersey.
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Fort Monroe
Fort Monroe (also known as the Fort Monroe National Monument) is a decommissioned military installation in Hampton, Virginia—at Old Point Comfort, the southern tip of the Virginia Peninsula, United States.
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Fourier transform
The Fourier transform (FT) decomposes a function of time (a signal) into the frequencies that make it up, in a way similar to how a musical chord can be expressed as the frequencies (or pitches) of its constituent notes.
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France
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
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Frederick Lindemann, 1st Viscount Cherwell
Frederick Alexander Lindemann, 1st Viscount Cherwell, (5 April 18863 July 1957) was a British physicist and an influential scientific adviser to the British government from the early 1940s to the early 1950s, particularly to Winston Churchill.
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Frequency modulation
In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.
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Freya radar
Freya was an early warning radar deployed by Germany during World War II; it was named after the Norse Goddess Freyja.
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Geminids
The Geminids are a meteor shower caused by the object 3200 Phaethon, which is thought to be a Palladian asteroid with a "rock comet" orbit.
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General Electric
General Electric Company (GE) is an American multinational conglomerate incorporated in New York and headquartered in Boston, Massachusetts.
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General Electric Company
The General Electric Company, or GEC, was a major UK-based industrial conglomerate involved in consumer and defence electronics, communications, and engineering.
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Germany
Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.
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Goniometer
A goniometer is an instrument that either measures an angle or allows an object to be rotated to a precise angular position.
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Goodyear Aerospace
Goodyear Aerospace Corporation was the aerospace and defense subsidiary of Goodyear.
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Grand Forks Air Force Base
Grand Forks Air Force Base (AFB) is a United States Air Force installation in northeastern North Dakota, located north of Emerado and west of Grand Forks.
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Great Depression
The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, beginning in the United States.
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Great Purge
The Great Purge or the Great Terror (Большо́й терро́р) was a campaign of political repression in the Soviet Union which occurred from 1936 to 1938.
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Gregory Breit
Gregory Breit (Григорий Альфредович Брейт-Шнайдер, Grigory Alfredovich Breit-Shneider; July 14, 1899, Mykolaiv, Kherson Governorate – September 13, 1981, Salem, Oregon) was a Russian-born American physicist and professor at NYU (1929–1934), U. of Wisconsin–Madison (1934–1947), Yale (1947–1968), and Buffalo (1968–1973).
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Ground-controlled interception
Ground-controlled interception (GCI) is an air defence tactic whereby one or more radar stations or other observational stations are linked to a command communications centre which guides interceptor aircraft to an airborne target.
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Ground-penetrating radar
Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface.
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Guglielmo Marconi
Guglielmo Marconi, 1st Marquis of Marconi (25 April 187420 July 1937) was an Italian inventor and electrical engineer known for his pioneering work on long-distance radio transmission and for his development of Marconi's law and a radio telegraph system.
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Gulag
The Gulag (ГУЛАГ, acronym of Главное управление лагерей и мест заключения, "Main Camps' Administration" or "Chief Administration of Camps") was the government agency in charge of the Soviet forced labor camp system that was created under Vladimir Lenin and reached its peak during Joseph Stalin's rule from the 1930s to the 1950s.
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H2S (radar)
H2S was the first airborne, ground scanning radar system.
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H2X
H2X, officially known as the AN/APS-15, was an American ground scanning radar system used for blind bombing during World War II.
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Halifax Harbour
Halifax Harbour is a large natural harbour on the Atlantic coast of Nova Scotia, Canada, located in the Halifax Regional Municipality.
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Hampshire
Hampshire (abbreviated Hants) is a county on the southern coast of England in the United Kingdom.
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Handley Page Heyford
The Handley Page Heyford was a twin-engine British biplane bomber of the 1930s.
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Hans Hollmann
Hans Erich (Eric) Hollmann (4 November 1899 – 19 November 1960) was a German electronic specialist who made several breakthroughs in the development of radar.
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Hanscom Air Force Base
Hanscom Air Force Base (AFB) is a United States Air Force base located predominantly within Bedford, Massachusetts, with portions extending into the adjoining towns of Lincoln, Concord and Lexington.
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Harmonic analysis
Harmonic analysis is a branch of mathematics concerned with the representation of functions or signals as the superposition of basic waves, and the study of and generalization of the notions of Fourier series and Fourier transforms (i.e. an extended form of Fourier analysis).
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Harold A. Zahl
Harold Adelbert Zahl (August 24, 1904 – March 11, 1973) was an American physicist who had a 35-year career with the U.S. Army Signal Corps Laboratories, making major contributions to radar development.
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Harry Boot
Henry Albert Howard "Harry" Boot (29 July 1917 – 8 February 1983) was an English physicist who with Sir John Randall and James Sayers developed the cavity magnetron, which was one of the keys to the Allied victory in the Second World War.
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Hawaii
Hawaii (Hawaii) is the 50th and most recent state to have joined the United States, having received statehood on August 21, 1959.
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Heinrich Hertz
Heinrich Rudolf Hertz (22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved the existence of the electromagnetic waves theorized by James Clerk Maxwell's electromagnetic theory of light.
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Henry Tizard
Sir Henry Thomas Tizard (23 August 1885 – 9 October 1959) was an English chemist, inventor and Rector of Imperial College, who developed the modern "octane rating" used to classify petrol, helped develop radar in World War II, and led the first serious studies of UFOs.
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Hidetsugu Yagi
was a Japanese electrical engineer from Osaka, Japan.
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High frequency
High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz).
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History of radar
The history of radar (where radar stands for RAdio Detection And Ranging) started with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects.
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History of smart antennas
The first smart antennas were developed for military communications and intelligence gathering.
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HMS Mercury (shore establishment)
HMS Mercury was a shore establishment of the Royal Navy, and the site of the Royal Navy Signals School and Combined Signals School.
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HMS Rodney (29)
HMS Rodney (pennant number 29) was one of two s built for the Royal Navy in the mid-1920s.
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Holography
Holography is the science and practice of making holograms.
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Horizon
The horizon or skyline is the apparent line that separates earth from sky, the line that divides all visible directions into two categories: those that intersect the Earth's surface, and those that do not.
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Hugh Dowding
Air Chief Marshal Hugh Caswall Tremenheere Dowding, 1st Baron Dowding, (24 April 1882 – 15 February 1970) was an officer in the Royal Air Force.
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Hungary
Hungary (Magyarország) is a country in Central Europe that covers an area of in the Carpathian Basin, bordered by Slovakia to the north, Ukraine to the northeast, Austria to the northwest, Romania to the east, Serbia to the south, Croatia to the southwest, and Slovenia to the west.
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Ice pellets
Ice pellets are a form of precipitation consisting of small, translucent balls of ice.
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Identification friend or foe
Identification, friend or foe (IFF) is an identification system designed for command and control.
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Imperial Japanese Navy
The Imperial Japanese Navy (IJN; Kyūjitai: 大日本帝國海軍 Shinjitai: 大日本帝国海軍 or 日本海軍 Nippon Kaigun, "Navy of the Greater Japanese Empire") was the navy of the Empire of Japan from 1868 until 1945, when it was dissolved following Japan's defeat and surrender in World War II.
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Imperial Russian Navy
The Imperial Russian Navy was the navy of the Russian Empire.
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Infrared
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
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Intercontinental ballistic missile
An intercontinental ballistic missile (ICBM) is a guided ballistic missile with a minimum range of primarily designed for nuclear weapons delivery (delivering one or more thermonuclear warheads).
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Ionosphere
The ionosphere is the ionized part of Earth's upper atmosphere, from about to altitude, a region that includes the thermosphere and parts of the mesosphere and exosphere.
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Italian Fascism
Italian Fascism (fascismo italiano), also known simply as Fascism, is the original fascist ideology as developed in Italy.
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Italian Naval Academy
The Italian Naval Academy (Italian: Accademia Navale) is a coeducational military university in Livorno, which is responsible for the technical training of military officers of the Italian Navy.
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Italy
Italy (Italia), officially the Italian Republic (Repubblica Italiana), is a sovereign state in Europe.
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J. S. Marshall Radar Observatory
The J.S. Marshall Radar Observatory (or MRO) is a McGill University facility in Sainte-Anne-de-Bellevue, Quebec, Canada housing several weather radars and other meteorological sensors, many of them running around the clock.
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Jack Piddington
John Hobart "Jack" Piddington (6 November 1910 – 16 July 1997) was Chief Research Scientist at the National Measurement Laboratory in Sydney, Australia from 1966 to 1975.
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Jagadish Chandra Bose
Sir Jagadish Chandra Bose, CSI, CIE, FRS (30 November 1858 – 23 November 1937), also spelled Jagdish and Jagadis, was a polymath, physicist, biologist, biophysicist, botanist and archaeologist, and an early writer of science fiction.
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James Clerk Maxwell
James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish scientist in the field of mathematical physics.
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Japan
Japan (日本; Nippon or Nihon; formally 日本国 or Nihon-koku, lit. "State of Japan") is a sovereign island country in East Asia.
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Japan Radio Company
is a Japanese company specialising in the field of wireless electronics for the communications industry.
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Jodrell Bank Observatory
The Jodrell Bank Observatory (originally the Jodrell Bank Experimental Station, then the Nuffield Radio Astronomy Laboratories from 1966 to 1999) is a British observatory that hosts a number of radio telescopes, and is part of the Jodrell Bank Centre for Astrophysics at the University of Manchester.
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Johannesburg
Johannesburg (also known as Jozi, Joburg and Egoli) is the largest city in South Africa and is one of the 50 largest urban areas in the world.
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John Randall (physicist)
Sir John Turton Randall, (23 March 1905 – 16 June 1984) was a British physicist and biophysicist, credited with radical improvement of the cavity magnetron, an essential component of centimetric wavelength radar, which was one of the keys to the Allied victory in the Second World War.
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Joseph Stalin
Joseph Vissarionovich Stalin (18 December 1878 – 5 March 1953) was a Soviet revolutionary and politician of Georgian nationality.
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Katsuura, Chiba
is a city located in Chiba Prefecture, Japan.
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Kenjiro Takayanagi
was a Japanese engineer and a pioneer in the development of television.
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Kharkiv
Kharkiv (Ха́рків), also known as Kharkov (Ха́рьков) from Russian, is the second-largest city in Ukraine.
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Kiel
Kiel is the capital and most populous city in the northern German state of Schleswig-Holstein, with a population of 249,023 (2016).
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King City weather radar station
The King City weather radar station (ICAO site identifier CWKR) is a weather radar located in King City, Ontario, Canada.
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Kinjiro Okabe
was a Japanese electrical engineering researcher and professor who made major contributions to magnetron and radar development.
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Klystron
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian,Pond, Norman H. "The Tube Guys".
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Kriegsmarine
The Kriegsmarine (literally "War Navy") was the navy of Germany from 1935 to 1945.
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Kronstadt
Kronstadt (Кроншта́дт), also spelled Kronshtadt, Cronstadt or Kronštádt (Krone for "crown" and Stadt for "city"; Kroonlinn), is a municipal town in Kronshtadtsky District of the federal city of Saint Petersburg, Russia, located on Kotlin Island, west of Saint Petersburg proper near the head of the Gulf of Finland.
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Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
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Laser Doppler velocimetry
Laser Doppler velocimetry (LDV), also known as laser Doppler anemometry (LDA), is the technique of using the Doppler shift in a laser beam to measure the velocity in transparent or semi-transparent fluid flows, or the linear or vibratory motion of opaque, reflecting, surfaces.
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Lawrence A. Hyland
Lawrence A. "Pat" Hyland (August 26, 1897 – November 24, 1989) was an American electrical engineer.
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Leiden University
Leiden University (abbreviated as LEI; Universiteit Leiden), founded in the city of Leiden, is the oldest university in the Netherlands.
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Leo C. Young
Leo C. Young (12 January 1891 – 16 January 1981) was an American radio engineer who had many accomplishments during a long career at the U.S. Naval Research Laboratory.
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LGM-30 Minuteman
The LGM-30 Minuteman is a U.S. land-based intercontinental ballistic missile (ICBM), in service with the Air Force Global Strike Command.
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Lidar
Lidar (also called LIDAR, LiDAR, and LADAR) is a surveying method that measures distance to a target by illuminating the target with pulsed laser light and measuring the reflected pulses with a sensor.
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Light
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
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Lightning
Lightning is a sudden electrostatic discharge that occurs typically during a thunderstorm.
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Line-of-sight propagation
Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves travel in a direct path from the source to the receiver.
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List of German inventors and discoverers
---- This is a list of German inventors and discoverers.
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List of World War II electronic warfare equipment
This is a List of World War II electronic warfare equipment and code words and tactics derived directly from the use of electronic equipment.
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Livorno
Livorno is a port city on the Ligurian Sea on the western coast of Tuscany, Italy.
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Lobe switching
Lobe switching is a method used on early radar sets to improve tracking accuracy.
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Local oscillator
In electronics, a local oscillator (LO) is an electronic oscillator used with a mixer to change the frequency of a signal.
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Location
The terms location and place in geography are used to identify a point or an area on the Earth's surface or elsewhere.
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London
London is the capital and most populous city of England and the United Kingdom.
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Low frequency
Low frequency (low freq) or LF is the ITU designation for radio frequencies (RF) in the range of 30 kilohertz (kHz)–300 kHz.
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Low-noise amplifier
A low-noise amplifier (LNA) is an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio.
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Luftwaffe
The Luftwaffe was the aerial warfare branch of the combined German Wehrmacht military forces during World War II.
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Malvern, Worcestershire
Malvern is a spa town and civil parish in Worcestershire, England.
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Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
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Mars Express
Mars Express is a space exploration mission being conducted by the European Space Agency (ESA).
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Marsdiep
The Marsdiep is a deep tide-race between Den Helder and Texel in the Netherlands, and running southwards between sandbanks.
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Massachusetts Institute of Technology
The Massachusetts Institute of Technology (MIT) is a private research university located in Cambridge, Massachusetts, United States.
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Météo-France
Météo-France is the French national meteorological service.
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McGill University
McGill University is a public research university in Montreal, Quebec, Canada.
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Meguro
is a special ward in Tokyo, Japan.
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Merle Tuve
Merle Anthony Tuve (June 27, 1901 – May 20, 1982) was an American geophysicist who was the founding director of the Johns Hopkins University Applied Physics Laboratory.
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Mesoscale meteorology
Mesoscale meteorology is the study of weather systems smaller than synoptic scale systems but larger than microscale and storm-scale cumulus systems.
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Met Office
The Met Office (officially the Meteorological Office) is the United Kingdom's national weather service.
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Meteorology
Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.
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Metropolitan-Vickers
Metropolitan-Vickers, Metrovick, or Metrovicks, was a British heavy electrical engineering company of the early-to-mid 20th century formerly known as British Westinghouse.
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Microsecond
A microsecond is an SI unit of time equal to one millionth (0.000001 or 10−6 or 1/1,000,000) of a second.
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Microwave
Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.
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Mid-Canada Line
The Mid-Canada Line (MCL), also known as the McGill Fence, was a line of radar stations running east-west across the middle of Canada, used to provide early warning of a Soviet bomber attack on North America.
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Mikhail Aleksandrovich Bonch-Bruevich
Mikhail Aleksandrovich Bonch-Bruevich (a, 22 February 1888 – 7 March 1940), sometimes spelled Bonch-Bruyevich, was a Russian engineer, scientist, and professor.
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Missile launch facility
A missile launch facility, also known as an underground missile silo, launch facility (LF), or nuclear silo, is a vertical cylindrical structure constructed underground, for the storage and launching of intercontinental ballistic missiles (ICBMs).
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MIT Lincoln Laboratory
The MIT Lincoln Laboratory, located in Lexington, Massachusetts, is a United States Department of Defense research and development center chartered to apply advanced technology to problems of national security.
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MIT Radiation Laboratory
The Radiation Laboratory, commonly called the Rad Lab, was a microwave and radar research laboratory located at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts (US).
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Monopulse radar
Monopulse radar is a radar system that implements the monopulse method for estimating the direction to the radar target.
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National Oceanic and Atmospheric Administration
The National Oceanic and Atmospheric Administration (NOAA; pronounced, like "Noah") is an American scientific agency within the United States Department of Commerce that focuses on the conditions of the oceans, major waterways, and the atmosphere.
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National Research Council (Canada)
The National Research Council (NRC, Conseil national de recherches Canada) is the primary national research and technology organization (RTO) of the Government of Canada, in science and technology research and development.
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National Science Foundation
The National Science Foundation (NSF) is a United States government agency that supports fundamental research and education in all the non-medical fields of science and engineering.
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National Severe Storms Laboratory
The National Severe Storms Laboratory (NSSL) is a National Oceanic and Atmospheric Administration (NOAA) weather research laboratory under the Office of Oceanic and Atmospheric Research.
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National University of Kharkiv
The Karazin University (Каразінський університет) or officially the V. N. Karazin Kharkiv National University (Харківський національний університет імені В. Н. Каразіна) is one of the major universities in Ukraine, and earlier in the Russian Empire and Soviet Union.
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National Weather Service
The National Weather Service (NWS) is an agency of the United States Federal Government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weather-related products to organizations and the public for the purposes of protection, safety, and general information.
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NATO
The North Atlantic Treaty Organization (NATO; Organisation du Traité de l'Atlantique Nord; OTAN), also called the North Atlantic Alliance, is an intergovernmental military alliance between 29 North American and European countries.
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Naval mine
A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines.
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Navy
A navy or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions.
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Nazi Germany
Nazi Germany is the common English name for the period in German history from 1933 to 1945, when Germany was under the dictatorship of Adolf Hitler through the Nazi Party (NSDAP).
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Nazism
National Socialism (Nationalsozialismus), more commonly known as Nazism, is the ideology and practices associated with the Nazi Party – officially the National Socialist German Workers' Party (Nationalsozialistische Deutsche Arbeiterpartei or NSDAP) – in Nazi Germany, and of other far-right groups with similar aims.
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NEC
is a Japanese multinational provider of information technology (IT) services and products, headquartered in Minato, Tokyo, Japan.
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Nello Carrara
Nello Carrara (19 February 1900 – 5 June 1993) was an Italian physicist and founder of the Electromagnetic Wave Research Institute.
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Netherlands
The Netherlands (Nederland), often referred to as Holland, is a country located mostly in Western Europe with a population of seventeen million.
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New York City
The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.
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New Zealand
New Zealand (Aotearoa) is a sovereign island country in the southwestern Pacific Ocean.
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NEXRAD
NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the Department of Transportation, and the U.S. Air Force within the Department of Defense.
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NHK
is Japan's national public broadcasting organization.
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Night fighter
A night fighter (also known as all-weather fighter or all-weather interceptor for a period of time post-World War II) is a fighter aircraft adapted for use at night or in other times of bad visibility.
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Nikolay Devyatkov
Nikolay Devyatkov (Никола́й Дми́триевич Девя́тков, Nikolaj Dmitrievič Devjatkov) — (Vologda — 1 February 2001, Moscow) was a Soviet/Russian scientist and inventor of microwave vacuum tubes and medical equipment.
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North Dakota
North Dakota is a U.S. state in the midwestern and northern regions of the United States.
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North Sea
The North Sea (Mare Germanicum) is a marginal sea of the Atlantic Ocean located between Great Britain, Scandinavia, Germany, the Netherlands, Belgium, and France.
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Northamptonshire
Northamptonshire (abbreviated Northants.), archaically known as the County of Northampton, is a county in the East Midlands of England.
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Oahu
O‘ahu (often anglicized Oahu) known as "The Gathering Place" is the third-largest of the Hawaiian Islands.
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Oklahoma City
Oklahoma City, often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma.
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Oliver Lodge
Sir Oliver Joseph Lodge, (12 June 1851 – 22 August 1940) was a British physicist and writer involved in the development of, and holder of key patents for, radio.
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Operation Paperclip
Operation Paperclip was a secret program of the Joint Intelligence Objectives Agency (JIOA) largely carried out by Special Agents of Army CIC, in which more than 1,600 German scientists, engineers, and technicians, such as Wernher von Braun and his V-2 rocket team, were recruited in post-Nazi Germany and taken to the U.S. for government employment, primarily between 1945 and 1959.
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Orford Ness
Orford Ness is a cuspate foreland shingle spit on the Suffolk coast in Great Britain, linked to the mainland at Aldeburgh and stretching along the coast to Orford and down to North Weir Point, opposite Shingle Street.
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Oscilloscope
An oscilloscope, previously called an oscillograph, and informally known as a scope or o-scope, CRO (for cathode-ray oscilloscope), or DSO (for the more modern digital storage oscilloscope), is a type of electronic test instrument that allows observation of varying signal voltages, usually as a two-dimensional plot of one or more signals as a function of time.
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Over-the-horizon radar
Over-the-horizon radar, or OTH (sometimes called beyond the horizon, or BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of kilometres, beyond the radar horizon, which is the distance limit for ordinary radar.
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Parabolic antenna
A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves.
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Parabolic reflector
A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves.
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Passive electronically scanned array
A passive electronically scanned array (PESA), also known as passive phased array, is a phased array antenna, that is an antenna in which the beam of radio waves can be electronically steered to point in different directions, in which all the antenna elements are connected to a single transmitter (such as a magnetron, a klystron or a travelling wave tube) and/or receiver.
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Paul E. Watson
Paul E. Watson (died 1943) was a pioneer researcher in the development of radar.
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Pavel K. Oshchepkov
Pavel Kondratyevich Oshchepkov (June 24, 1908 – December 1, 1992) was a Russian physicist who had a leading role in the development of radio-location (radar) in the USSR.
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Peninsula
A peninsula (paeninsula from paene "almost” and insula "island") is a piece of land surrounded by water on the majority of its border, while being connected to a mainland from which it extends.
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Phased array
In antenna theory, a phased array usually means an electronically scanned array; a computer-controlled array of antennas which creates a beam of radio waves which can be electronically steered to point in different directions, without moving the antennas.
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Philips
Koninklijke Philips N.V. (Philips, stylized as PHILIPS) is a Dutch multinational technology company headquartered in Amsterdam currently focused in the area of healthcare.
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Philips Natuurkundig Laboratorium
The Philips Natuurkundig Laboratorium (English translation: Philips Physics Laboratory) or NatLab was the Dutch section of the Philips research department, which did research for the product divisions of that company.
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Physicist
A physicist is a scientist who has specialized knowledge in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe.
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Picosecond
A picosecond is an SI unit of time equal to 10−12 or 1/1,000,000,000,000 (one trillionth) of a second.
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Pinetree Line
The Pinetree Line was a series of radar stations located across the northern United States and southern Canada at about the 50th parallel north, along with a number of other stations located on the Atlantic and Pacific coasts.
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Plan position indicator
The plan position indicator (PPI), is the most common type of radar display.
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Polarization (waves)
Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.
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Portsmouth
Portsmouth is a port city in Hampshire, England, mainly on Portsea Island, south-west of London and south-east of Southampton.
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Potomac River
The Potomac River is located within the Mid-Atlantic region of the United States and flows from the Potomac Highlands into the Chesapeake Bay.
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Primary mirror
A primary mirror (or primary) is the principal light-gathering surface (the objective) of a reflecting telescope.
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Project Diana
Project Diana, named for the Roman moon goddess Diana, was an experimental project of the US Army Signal Corps in 1946 to bounce radar signals off the Moon and receive the reflected signals.
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Project Nike
Project Nike, (Greek: Νίκη, "Victory", pronounced), was a U.S. Army project, proposed in May 1945 by Bell Laboratories, to develop a line-of-sight anti-aircraft missile system.
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Proportionality (mathematics)
In mathematics, two variables are proportional if there is always a constant ratio between them.
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Pulse repetition frequency
The pulse repetition frequency (PRF) is the number of pulses of a repeating signal in a specific time unit, normally measured in pulses per second.
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Pulse-Doppler radar
A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity.
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Radar
Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects.
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Radar astronomy
Radar astronomy is a technique of observing nearby astronomical objects by reflecting microwaves off target objects and analyzing the reflections.
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Radar gun
A radar speed gun (also radar gun and speed gun) is a device used to measure the speed of moving objects.
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Radar picket
A radar picket is a radar-equipped station, ship, submarine, aircraft, or vehicle used to increase the radar detection range around a force to protect it from surprise attack, typically air attack.
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Radio astronomy
Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies.
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Radio direction finder
A radio direction finder (RDF) is a device for finding the direction, or ''bearing'', to a radio source.
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Radio navigation
Radio navigation or radionavigation is the application of radio frequencies to determine a position of an object on the Earth.
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Radio receiver
In radio communications, a radio receiver (receiver or simply radio) is an electronic device that receives radio waves and converts the information carried by them to a usable form.
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Radio telescope
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.
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Radio wave
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
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RCA
The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in 1919.
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Red Army
The Workers' and Peasants' Red Army (Рабоче-крестьянская Красная армия (РККА), Raboche-krest'yanskaya Krasnaya armiya (RKKA), frequently shortened in Russian to Красная aрмия (КА), Krasnaya armiya (KA), in English: Red Army, also in critical literature and folklore of that epoch – Red Horde, Army of Work) was the army and the air force of the Russian Soviet Federative Socialist Republic, and, after 1922, the Union of Soviet Socialist Republics.
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Reflectance
Reflectance of the surface of a material is its effectiveness in reflecting radiant energy.
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Regenerative circuit
A regenerative circuit is an amplifier circuit that employs positive feedback (also known as regeneration); some of the output of the amplifying device is applied to its input without phase inversion, which reinforces the signal, increasing the amplification.
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Remote sensing
Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation.
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Ring oscillator
A ring oscillator is a device composed of an odd number of NOT gates in a ring, whose output oscillates between two voltage levels, representing true and false.
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Robert Morris Page
Robert Morris Page (2 June 1903 – 15 May 1992) was an American physicist who was a leading figure in the development of radar technology.
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Robert Watson-Watt
Sir Robert Alexander Watson-Watt, KCB, FRS, FRAeS (13 April 1892 – 5 December 1973) was a Scottish pioneer of radio direction finding and radar technology.
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Rome
Rome (Roma; Roma) is the capital city of Italy and a special comune (named Comune di Roma Capitale).
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Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's aerial warfare force.
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Royal Australian Air Force
The Royal Australian Air Force (RAAF), formed March 1921, is the aerial warfare branch of the Australian Defence Force (ADF).
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Royal Canadian Navy
The Royal Canadian Navy (RCN; French: Marine royale canadienne) is the naval force of Canada.
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Royal Netherlands Navy
The Royal Netherlands Navy (Koninklijke Marine, “Royal Navy”) is the navy of the Netherlands.
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Royal New Zealand Air Force
The Royal New Zealand Air Force (RNZAF) (Maori: Te Tauaarangi o Aotearoa, "New Zealand Warriors of the Sky"; previously Te Hokowhitu o Kahurangi, "War Party of the Blue") is the air force component of the New Zealand Defence Force.
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Royal New Zealand Navy
The Royal New Zealand Navy (RNZN; Maori: Te Taua Moana o Aotearoa, "Warriors of the Sea of New Zealand") is the maritime arm of the New Zealand Defence Force. The fleet currently consists of ten ships and eight naval helicopters.
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Rudolf Kühnhold
Rudolf Kühnhold (1903–1992) was an experimental physicist who is often given credit for initiating research that led to the Funkmessgerät (radio measuring device – radar) in Germany.
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Russia
Russia (rɐˈsʲijə), officially the Russian Federation (p), is a country in Eurasia. At, Russia is the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 144 million people as of December 2017, excluding Crimea. About 77% of the population live in the western, European part of the country. Russia's capital Moscow is one of the largest cities in the world; other major cities include Saint Petersburg, Novosibirsk, Yekaterinburg and Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. From northwest to southeast, Russia shares land borders with Norway, Finland, Estonia, Latvia, Lithuania and Poland (both with Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, China, Mongolia and North Korea. It shares maritime borders with Japan by the Sea of Okhotsk and the U.S. state of Alaska across the Bering Strait. The East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states; most of the Rus' lands were overrun by the Mongol invasion and became tributaries of the nomadic Golden Horde in the 13th century. The Grand Duchy of Moscow gradually reunified the surrounding Russian principalities, achieved independence from the Golden Horde. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Poland on the west to Alaska on the east. Following the Russian Revolution, the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics, the world's first constitutionally socialist state. The Soviet Union played a decisive role in the Allied victory in World War II, and emerged as a recognized superpower and rival to the United States during the Cold War. The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in 1991, twelve independent republics emerged from the USSR: Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and the Baltic states regained independence: Estonia, Latvia, Lithuania; the Russian SFSR reconstituted itself as the Russian Federation and is recognized as the continuing legal personality and a successor of the Soviet Union. It is governed as a federal semi-presidential republic. The Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction. Russia is a great power as well as a regional power and has been characterised as a potential superpower. It is a permanent member of the United Nations Security Council and an active global partner of ASEAN, as well as a member of the G20, the Shanghai Cooperation Organisation (SCO), the Council of Europe, the Asia-Pacific Economic Cooperation (APEC), the Organization for Security and Co-operation in Europe (OSCE), and the World Trade Organization (WTO), as well as being the leading member of the Commonwealth of Independent States (CIS), the Collective Security Treaty Organization (CSTO) and one of the five members of the Eurasian Economic Union (EEU), along with Armenia, Belarus, Kazakhstan and Kyrgyzstan.
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Russian Academy of Sciences
The Russian Academy of Sciences (RAS; Росси́йская акаде́мия нау́к (РАН) Rossíiskaya akadémiya naúk) consists of the national academy of Russia; a network of scientific research institutes from across the Russian Federation; and additional scientific and social units such as libraries, publishing units, and hospitals.
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Russian Navy
The Russian Navy (r, lit. Military-Maritime Fleet of the Russian Federation) is the naval arm of the Russian Armed Forces.
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Russian Revolution
The Russian Revolution was a pair of revolutions in Russia in 1917 which dismantled the Tsarist autocracy and led to the rise of the Soviet Union.
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S band
The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave band of the electromagnetic spectrum covering frequencies from 2 to 4 gigahertz (GHz).
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Safeguard Program
The Safeguard Program was a U.S. Army anti-ballistic missile (ABM) system designed to protect the U.S. Air Force's Minuteman ICBM silos from attack, thus preserving the US's nuclear deterrent fleet.
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Saint Petersburg
Saint Petersburg (p) is Russia's second-largest city after Moscow, with 5 million inhabitants in 2012, part of the Saint Petersburg agglomeration with a population of 6.2 million (2015).
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Satellite
In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.
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Saturn
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
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SCR-268 radar
The SCR-268 (for Signal Corps Radio no. 268) was the US Army's first radar system.
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SCR-270
The SCR-270 (Signal Corps Radio model 270) was one of the first operational early-warning radars.
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Sea of Japan
The Sea of Japan (see below for other names) is a marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula and Russia.
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Searchlight
A searchlight (or spotlight) is an apparatus that combines an extremely luminous source (traditionally a carbon arc lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays in a particular direction, usually constructed so that it can be swiveled about.
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Secondary mirror
A secondary mirror (or secondary) is the second deflecting or focusing mirror element in a reflecting telescope.
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Secrets of Radar Museum
The Secrets of Radar Museum is a small museum located at 2155b Crumlin Sideroad near the London International Airport in London, Ontario, Canada.
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Seetakt
Seetakt was a shipborne radar developed in the 1930s and used by Nazi Germany's Kriegsmarine during World War II.
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Semion Braude
Semion Yakovlevich Braude (Семен Якович Брауде; January 20, 1911 – July 1, 2003) was a Ukrainian physicist and radio astronomer.
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Sevastopol
Sevastopol (Севастополь; Севасто́поль; Акъяр, Aqyar), traditionally Sebastopol, is the largest city on the Crimean Peninsula and a major Black Sea port.
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Shintaro Uda
Japanese inventor.
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Ship
A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying passengers or goods, or in support of specialized missions, such as defense, research and fishing.
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Shortwave radio
Shortwave radio is radio transmission using shortwave radio frequencies.
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Shuttle Radar Topography Mission
The Shuttle Radar Topography Mission (SRTM) is an international research effort that obtained digital elevation models on a near-global scale from 56° S to 60° N, to generate the most complete high-resolution digital topographic database of Earth prior to the release of the ASTER GDEM in 2009.
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Signal Corps (United States Army)
The United States Army Signal Corps (USASC) develops, tests, provides, and manages communications and information systems support for the command and control of combined arms forces.
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Signal Corps Laboratories
Signal Corps Laboratories (SCL) was formed on June 30, 1930, as part of the U.S. Army Signal Corps at Fort Monmouth, New Jersey.
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Signals Research and Development Establishment
The Signals Research and Development Establishment (SRDE) was a British government military research establishment, based in Christchurch, Dorset from 1943 until it merged with the Royal Radar Establishment (RRE) in Malvern, Worcestershire to form the Royal Signals and Radar Establishment (RSRE) in 1976.
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Slough
Slough is a large town in Berkshire, England, on the western fringes of the Greater London Urban Area, west of central London, north of Windsor, east of Maidenhead, south-east of High Wycombe and north-east of the county town of Reading.
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South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.
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South African Defence Force
The South African Defence Force (SADF) comprised the South African armed forces from 1957 until 1994.
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Soviet Air Defence Forces
The Soviet Air Defence Forces (войска ПВО, voyska protivovozdushnoy oborony, voyska PVO, V-PVO, lit. Anti-Air Defence Troops; and formerly protivovozdushnaya oborona strany, PVO strany, lit. Anti-Air Defence of the Nation) was the air defence branch of the Soviet Armed Forces.
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Soviet cruiser Molotov
Molotov (Молотов) was a Project 26bis of the Soviet Navy that served during World War II and into the Cold War.
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Soviet Union
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.
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Spark gap
A spark gap consists of an arrangement of two conducting electrodes separated by a gap usually filled with a gas such as air, designed to allow an electric spark to pass between the conductors.
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Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.
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Sputnik 1
Sputnik 1 (or; "Satellite-1", or "PS-1", Простейший Спутник-1 or Prosteyshiy Sputnik-1, "Elementary Satellite 1") was the first artificial Earth satellite.
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SS Normandie
The SS Normandie was an ocean liner built in Saint-Nazaire, France, for the French Line Compagnie Générale Transatlantique (CGT).
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Stratus cloud
Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds that are formed by rising thermals.
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Suffolk
Suffolk is an East Anglian county of historic origin in England.
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Superheterodyne receiver
A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency.
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Supermarine Scapa
The Supermarine Scapa was a British general reconnaissance flying boat built by Supermarine that was used by the Royal Air Force between 1935 and 1939.
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Surface wave
In physics, a surface wave is a mechanical wave that propagates along the interface between differing media.
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Synthetic-aperture radar
Synthetic-aperture radar (SAR) is a form of radar that is used to create two- or three-dimensional images of objects, such as landscapes.
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Telecommunications Research Establishment
The Telecommunications Research Establishment (TRE) was the main United Kingdom research and development organization for radio navigation, radar, infra-red detection for heat seeking missiles, and related work for the Royal Air Force (RAF) during World War II and the years that followed.
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Telefunken
Telefunken was a German radio and television apparatus company, founded in Berlin in 1903, as a joint venture of Siemens & Halske and the Allgemeine Elektricitäts-Gesellschaft (AEG) (General electricity company).
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Thames Estuary
The Thames Estuary is the estuary in which the River Thames meets the waters of the North Sea, in the south-east of Great Britain.
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The Hague
The Hague (Den Haag,, short for 's-Gravenhage) is a city on the western coast of the Netherlands and the capital of the province of South Holland.
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The Secret War (TV series)
The Secret War was a seven–part television series produced by the BBC in conjunction with the Imperial War Museum documenting various technical developments during the Second World War.
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Thunderstorm
A thunderstorm, also known as an electrical storm, lightning storm, or thundershower, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder.
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Titan (moon)
Titan is the largest moon of Saturn.
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Tizard Mission
The Tizard Mission, officially the British Technical and Scientific Mission, was a British delegation that visited the United States during the Second World War in order to obtain the industrial resources to exploit the military potential of the research and development (R&D) work completed by the UK up to the beginning of World War II, but that Britain itself could not exploit due to the immediate requirements of war-related production.
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Tohoku University
, abbreviated to, located in Sendai, Miyagi in the Tōhoku Region, Japan, is a Japanese national university.
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Tokyo Bay
is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture.
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Tokyo Institute of Technology
is a national research university located in Greater Tokyo Area, Japan.
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Tornado vortex signature
A tornado vortex signature or tornadic vortex signature, abbreviated TVS, is a Pulse-Doppler radar weather radar detected rotation algorithm that indicates the likely presence of a strong mesocyclone that is in some stage of tornadogenesis.
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Toulon
Toulon (Provençal: Tolon (classical norm), Touloun (Mistralian norm)) is a city in southern France and a large military harbour on the Mediterranean coast, with a major French naval base.
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Transponder (aeronautics)
A transponder (short for transmitter-responder and sometimes abbreviated to XPDR, XPNDR, TPDR or TP) is an electronic device that produces a response when it receives a radio-frequency interrogation.
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Traveling-wave tube
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range.
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Triangulation
In trigonometry and geometry, triangulation is the process of determining the location of a point by forming triangles to it from known points.
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Tripartite Pact
The Tripartite Pact, also known as the Berlin Pact, was an agreement between Germany, Italy and Japan signed in Berlin on 27 September 1940 by, respectively, Joachim von Ribbentrop, Galeazzo Ciano and Saburō Kurusu.
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U-boat
U-boat is an anglicised version of the German word U-Boot, a shortening of Unterseeboot, literally "undersea boat".
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Ukraine
Ukraine (Ukrayina), sometimes called the Ukraine, is a sovereign state in Eastern Europe, bordered by Russia to the east and northeast; Belarus to the northwest; Poland, Hungary, and Slovakia to the west; Romania and Moldova to the southwest; and the Black Sea and Sea of Azov to the south and southeast, respectively.
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Ultra high frequency
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one decimeter.
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Ultra-wideband
Ultra-wideband (also known as UWB, ultra-wide band and ultraband) is a radio technology that can use a very low energy level for short-range, high-bandwidth communications over a large portion of the radio spectrum.
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Union City, Oklahoma
Union City is a town in Canadian County, Oklahoma, United States.
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United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.
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United States
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
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United States Air Force
The United States Air Force (USAF) is the aerial and space warfare service branch of the United States Armed Forces.
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United States Department of War
The United States Department of War, also called the War Department (and occasionally War Office in the early years), was the United States Cabinet department originally responsible for the operation and maintenance of the United States Army, also bearing responsibility for naval affairs until the establishment of the Navy Department in 1798, and for most land-based air forces until the creation of the Department of the Air Force on September 18, 1947.
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United States Naval Research Laboratory
The United States Naval Research Laboratory (NRL) is the corporate research laboratory for the United States Navy and the United States Marine Corps.
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United States Secretary of War
The Secretary of War was a member of the United States President's Cabinet, beginning with George Washington's administration.
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University of Birmingham
The University of Birmingham (informally Birmingham University) is a public research university located in Edgbaston, Birmingham, United Kingdom.
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University of Canterbury
The University of Canterbury (Te Whare Wānanga o Waitaha; postnominal abbreviation Cantuar. or Cant. for Cantuariensis, the Latin name for Canterbury) is New Zealand's second oldest university.
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University of Manchester
The University of Manchester is a public research university in Manchester, England, formed in 2004 by the merger of the University of Manchester Institute of Science and Technology and the Victoria University of Manchester.
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University of Sydney
The University of Sydney (informally, USyd or USYD) is an Australian public research university in Sydney, Australia.
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University of the Witwatersrand
The University of the Witwatersrand, Johannesburg, is a multi-campus South African public research university situated in the northern areas of central Johannesburg.
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USS Leary (DD-158)
USS Leary (DD-158) was a in the United States Navy during World War II.
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USS New York (BB-34)
USS New York (BB-34) was a United States Navy battleship, the lead ship of her class.
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Velocity
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time.
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Very high frequency
Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten to one meter.
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W. A. S. Butement
William Alan Stewart Butement (18 August 1904 – 25 January 1990) was a defence scientist and public servant.
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Watt
The watt (symbol: W) is a unit of power.
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Würzburg radar
The low-UHF band Würzburg radar was the primary ground-based gun laying radar for the Luftwaffe and the Wehrmacht Heer (German Army) during World War II.
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Weather radar
Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the precipitation.
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Wellington
Wellington (Te Whanganui-a-Tara) is the capital city and second most populous urban area of New Zealand, with residents.
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Wembley
Wembley is an area of northwest London, England, and part of the London Borough of Brent.
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Western Electric
Western Electric Company (WE, WECo) was an American electrical engineering and manufacturing company that served as the primary supplier to AT&T from 1881 to 1996.
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Westinghouse Electric Corporation
The Westinghouse Electric Corporation was an American manufacturing company.
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Wilhelm Runge
Wilhelm Tolmé Runge (June 10, 1895 – June 9, 1987) was an electrical engineer and physicist who had a major involvement in developing radar systems in Germany.
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William R. Blair
William Richards Blair (November 7, 1874 – September 2, 1962) was an American scientist and U.S. Army officer, who worked on the development of the radar in United States starting during the 1930s.
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Winston Churchill
Sir Winston Leonard Spencer-Churchill (30 November 187424 January 1965) was a British politician, army officer, and writer, who was Prime Minister of the United Kingdom from 1940 to 1945 and again from 1951 to 1955.
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Wireless telegraphy
Wireless telegraphy is the transmission of telegraphy signals from one point to another by means of an electromagnetic, electrostatic or magnetic field, or by electrical current through the earth or water.
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World War II
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
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WSR-1
The WSR-1 or Weather Surveillance Radar-1 was one of the first weather radars and the first used by a civilian organization in the US.
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WSR-57
WSR-57 radars were the USA's main weather surveillance radar for over 35 years.
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WSR-74
WSR-74 radars were Weather Surveillance Radars designed in 1974 for the National Weather Service.
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XAF radar
The XAF was an experimental radar set constructed in 1938, which survived World War II as a historical artifact, and is now placed on exhibit at the Historical Electronics Museum, located in Linthicum, Maryland.
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Yagi–Uda antenna
A Yagi–Uda antenna, commonly known as a Yagi antenna, is a directional antenna consisting of multiple parallel elements in a line, usually half-wave dipoles made of metal rods.
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Yoji Ito
was an engineer and scientist that had a major role in the Japanese development of magnetrons and the Radio Range Finder (RRF – the code name for a radar).
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Zoltán Lajos Bay
Zoltán Lajos Bay (July 24, 1900 in Gyulavári – October 4, 1992 in Washington, D.C.)"Fizikai Szemle 1999/5 - Zsolt Bor: OPTICS BY HUNGARIANS" (with Zoltán Bay), József Attila University, Szeged, Hungary, 1999 was a Hungarian physicist, professor, and engineer who developed technologies, including tungsten lamps and microwave devices.
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955 acorn triode
The type 955 triode "acorn tube" is a small triode thermionic valve (vacuum tube in USA) designed primarily to operate at high frequency.
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Redirects here:
Early radar, History of Radar, Radar History, Range and Direction Finding, Range and direction finding.
References
[1] https://en.wikipedia.org/wiki/History_of_radar
