Question

Define satellite communication.

Hint:

Keyword chain: \textbf{Uplink → Satellite (transponder) → Downlink}.

Answer 1

Step 1: Clear definition.
Satellite communication is the transmission of voice, data, or video by uplinking radio signals from an Earth station to an artificial satellite, which receives, amplifies/relays, and downlinks them to another Earth station or user terminal.
Step 2: Essential features.
Works via uplink & downlink frequencies, uses transponders on satellites (GEO, MEO, LEO constellations) to provide long-distance coverage, broadcasting, navigation and internet connectivity.
Step 3: Conclusion.
Thus, it is a space-based relay system enabling global, wide-area telecommunications.