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t. e. 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. Communications satellites are used for television, telephone, radio, internet, and military ...
High-throughput satellite ( HTS) is a communications satellite that provides more throughput than a classic FSS satellite (at least twice, though usually by a factor of 20 or more [1]) for the same amount of allocated orbital spectrum, thus significantly reducing cost-per-bit. [2] ViaSat-1 and EchoStar XVII (also known as Jupiter-1 [3]) do ...
Satellite communications are used for data transmission, remote instrument diagnostics, for physical satellite and oceanographic measurements from the sea surface (e.g. sea surface temperature and sea surface height) to the ocean floor, and for seismological analyses.
The U.S. Tracking and Data Relay Satellite System ( TDRSS, pronounced "T-driss") is a network of American communications satellites (each called a tracking and data relay satellite, TDRS) and ground stations used by NASA for space communications. The system was designed to replace an existing network of ground stations that had supported all of ...
The World Teleport Association publishes lists of companies based on revenues from all customized communications sources and includes operators of teleports and satellite fleets. In order from largest to smallest, the Global Top 20 of 2021 were: SES (Luxembourg) Intelsat S.A. (Luxembourg) EchoStar Satellite Services (USA) Hughes Network Systems ...
Globalstar, Inc. Globalstar, Inc. is an American satellite communications company that operates a low Earth orbit (LEO) satellite constellation for satellite phone, low-speed data communications and earth observations. The Globalstar second-generation constellation consists of 25 low Earth orbiting (LEO) satellites.
Maiden launch. 14 August 2010 ( USA-214) Last launch. 26 March 2020 ( USA-298) Advanced Extremely High Frequency ( AEHF) is a constellation of communications satellites operated by the United States Space Force. They are used to relay secure communications for the United States Armed Forces, the British Armed Forces, the Canadian Armed Forces ...
Inmarsat satellite telephone in use after a natural disaster in Nias, Indonesia. The unit depicted was manufactured by Thrane & Thrane A/S of Denmark. (April 2005) Inmarsat is a British satellite telecommunications company, offering global mobile services. It provides telephone and data services to users worldwide, via portable or mobile ...
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