Table of Contents
20 relations: Communications satellite, Fixed-satellite service, Frequency allocation, Ground segment, Hisdesat, Hispasat, International Telecommunication Union, Military communications, NATO, Ofcom, Parabolic antenna, Rain fade, Satellite, SICRAL 1B, Space segment, Spainsat, Super high frequency, X band, XTAR, XTAR-EUR.
Communications satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. X Band Satellite Communication and communications satellite are communications satellites.
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Fixed-satellite service
Fixed-satellite service (short: FSS | also: fixed-satellite radiocommunication service) is – according to article 1.21 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as A radiocommunication service between earth stations at given positions, when one or more satellites are used; the given position may be a specified fixed point or any fixed point within specified areas; in some cases this service includes satellite-to-satellite links, which may also be operated in the inter-satellite service; the fixed-satellite service may also include feeder links for other space radiocommunication services.
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Frequency allocation
Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries.
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Ground segment
A ground segment consists of all the ground-based elements of a space system used by operators and support personnel, as opposed to the space segment and user segment.
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Hisdesat
Hisdesat ('Hisdesat Strategic Services') is a Spanish company created in 2001 by Hispasat (43%), Ingeniería y Servicios Aeroespaciales (30%), EADS CASA (15%, now Airbus), Indra Sistemas (7%) and SENER (5%) with initial investment of 415 million euros.
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Hispasat
Hispasat is the operating company for a number of Spanish communications satellites that cover the Americas, Europe and North Africa from orbital positions 30.0° West and 61.0° West.
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International Telecommunication Union
The International Telecommunication Union (ITU)French: Union Internationale des Télécommunications is a specialized agency of the United Nations responsible for many matters related to information and communication technologies.
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Military communications
Military communications or military signals involve all aspects of communications, or conveyance of information, by armed forces.
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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 of 32 member states—30 European and 2 North American.
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Ofcom
The Office of Communications, commonly known as Ofcom, is the government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom.
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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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Rain fade
Rain fade refers primarily to the absorption of a microwave radio frequency (RF) signal by atmospheric rain, snow, or ice, and losses which are especially prevalent at frequencies above 11 GHz.
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Satellite
A satellite or artificial satellite is an object, typically a spacecraft, placed into orbit around a celestial body.
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SICRAL 1B
SICRAL 1B is a military communications satellite built by Thales Alenia Space for Italian Armed Forces.
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Space segment
The space segment of an artificial satellite system is one of its three operational components (the others being the user and ground segments).
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Spainsat
Spainsat is a Spanish telecommunications satellite used for military and government communications.
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Super high frequency
Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz).
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X band
The X band is the designation for a band of frequencies in the microwave radio region of the electromagnetic spectrum.
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XTAR
XTAR, LLC is a commercial satellite operator exclusively providing services in the X band frequency range, which is the communications cornerstone of today's military, diplomatic, humanitarian and emergency disaster response operations. X Band Satellite Communication and XTAR are military communications.
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XTAR-EUR
The XTAR-EUR is a communication satellite developed by Spain and the United States and in order to provide a secure channel over the Indian Ocean.
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