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satellite communication

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AUSSAT-1 communications satellite
AUSSAT-1 communications satellite
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Category: Science & Tech
Related Topics:
telecommunication
megaconstellation
satellite radio
communications satellite
satellite system
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DigitalCommons@University of Nebraska - Lincoln - Legal aspects of satellite communications—A mini handbook (Mar. 12, 2024)
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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. 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 has two main components: the ground segment, which consists of fixed or mobile transmission, reception, and ancillary equipment, and the space segment, which primarily is the satellite itself. A typical satellite link involves the transmission or uplinking of a signal from an Earth station to a satellite. The satellite then receives and amplifies the signal and retransmits it back to Earth, where it is received and reamplified by Earth stations and terminals. Satellite receivers on the ground include direct-to-home (DTH) satellite equipment, mobile reception equipment in aircraft, satellite telephones, and handheld devices.