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 **Automatic Dependent Surveillance–Broadcast (ADS-B)** is a surveillance technology and form of Electronic [Conspicuity](https://en.wikipedia.org/wiki/Airborne_collision_avoidance_system#Aircraft_collision_avoidance) in which an [aircraft](https://en.wikipedia.org/wiki/Aircraft) determines its position via [satellite navigation](https://en.wikipedia.org/wiki/Satellite_navigation) or other sensors and periodically broadcasts it, enabling it to be tracked.
 
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