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Satellite communication | Definition, History, Facts | Britannica Satellite communications play a vital role in the global telecommunications system Approximately 2,000 artificial satellites orbiting Earth relay analog and digital signals carrying voice, video, and data to and from one or many locations worldwide
Satellite communication - Orbit, Signals, Relay | Britannica Satellite communication - Orbit, Signals, Relay: A satellite is basically a self-contained communications system with the ability to receive signals from Earth and to retransmit those signals back with the use of a transponder—an integrated receiver and transmitter of radio signals
Satellite Communication - SpaceNext50 | Encyclopedia Britannica Satellite communication, in telecommunications, the use of artificial satellites to provide communication links between various points on Earth Satellite communications play a vital role in the global telecommunications system
Satellite communication - Spacecraft, Orbit, Signals | Britannica Satellite communication - Spacecraft, Orbit, Signals: The idea of communicating through a satellite first appeared in the short story titled “The Brick Moon,” written by the American clergyman and author Edward Everett Hale and published in The Atlantic Monthly in 1869–70
Satellite communication - Global, Navigation, Broadcasting | Britannica There are three types of communication services that satellites provide: telecommunications, broadcasting, and data communications Telecommunication services include telephone calls and services provided to telephone companies, as well as wireless, mobile, and cellular network providers
Communications satellite | Orbital Positioning, Data Transfer Global . . . Communications satellite, Earth-orbiting system capable of receiving a signal (e g , data, voice, TV) and relaying it back to the ground Communications satellites have been a significant part of domestic and global communications since the 1970s
Transponder | Britannica Learn about this topic in these articles: satellite communication In satellite communication: How satellites work …with the use of a transponder —an integrated receiver and transmitter of radio signals