Definition
A method of transmitting voice or data signals between aircraft and ground stations by relaying them through one or more orbiting satellites, providing reliable long-range communication where line-of-sight VHF or HF radio is impractical.
Plain English
Talking to or sending data to people on the ground by bouncing the signal off a satellite in space, so the message can travel much further than a normal radio.
Context Anchor
Seen in instrument flying and radio communication discussions when comparing long-range communication methods, including sky-wave radio and satellite-based links.
Derivation
From Latin satelles meaning 'attendant' or 'companion' — a satellite 'attends' the Earth by orbiting it. The communication aspect simply means the satellite acts as a relay station in the sky instead of a tower on the ground.
Why Pilots Care
Provides reliable contact over oceans and remote areas where traditional radio signals cannot reach, supporting safer oceanic and international operations.
Intuition Check
Satellite communication does not mean the aircraft is navigating by satellite. Here, it means using a satellite as a relay to pass a voice or data message.
Example Sentence 1
Crossing the North Atlantic, the crew used satellite communication to relay their position report when HF reception became poor.
Example Sentence 2
Satellite communication allowed the pilot to receive updated weather reports while crossing the Pacific.