Which mechanism extends a UAS data link range by using satellites or relay stations?

Which mechanism extends a UAS data link range by using satellites or relay stations?

• A. Direct radio
• B. Mesh network
• C. Satellite relay
• D. Fiber optic

Answer: (C)

Extending a UAS data link range relies on routing the signal through an intermediate platform rather than keeping it on a single direct radio hop. By using satellites or relay stations, the control and payload data can travel far beyond the drone’s line of sight, reaching operators in remote areas or across oceans. Satellite relay accomplishes this by having the aircraft transmit to a satellite, which forwards the data down to a ground station or to another relay point, effectively bridging large distances. This enables beyond‑visual‑line‑of‑sight operations and broader coverage because the link isn’t limited by horizon geometry or local radio range. Direct radio stays within line of sight and has limited reach; a mesh network relies on multiple short-range hops between nodes and still ultimately depends on nearby transmitters rather than a space-based or fixed relay, while fiber optic requires a physical cable and isn’t practical for airborne links.

Extending a UAS data link range relies on routing the signal through an intermediate platform rather than keeping it on a single direct radio hop. By using satellites or relay stations, the control and payload data can travel far beyond the drone’s line of sight, reaching operators in remote areas or across oceans. Satellite relay accomplishes this by having the aircraft transmit to a satellite, which forwards the data down to a ground station or to another relay point, effectively bridging large distances. This enables beyond‑visual‑line‑of‑sight operations and broader coverage because the link isn’t limited by horizon geometry or local radio range. Direct radio stays within line of sight and has limited reach; a mesh network relies on multiple short-range hops between nodes and still ultimately depends on nearby transmitters rather than a space-based or fixed relay, while fiber optic requires a physical cable and isn’t practical for airborne links.