relay satellite
Orbital signal booster
A relay satellite receives signals from one location and retransmits them to another, serving as an intermediary when direct communication isn't possible due to distance or obstacles.
These satellites enable television broadcasts, telephone calls, and data transmission across continents or between spacecraft and ground stations: The Mars rover sends data to Earth via a relay satellite in orbit.
- transponderSignal-activated transmitter
- dishFood container or recipe
- uplinkTransmission to spacecraft
- downlinkSpacecraft-to-Earth transmission
- tracking stationFacility following moving objects
mission control · beam · multiplexing · store-and-forward · signal · communication link · line of sight · geostationary orbit · receiver · Hubble Space Telescope · crosslink · frequency modulation · transmitter · orbit · bandwidth · telemetry · space probe · array
relay satelliteground station
Surface facility receiving spacecraft signals
cell tower · broadcast tower · undersea cable · fiber optic network · underground cable
relay satellitedirect broadcast
relay satellitetelegraph wire
Conductor for electrical messages
semaphore · carrier pigeon · smoke signals · messenger · signal fire
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