TDOA-based Position Verification of ADS-B Information Using a Sensor Network

Automatic Dependent Surveillance-Broadcast (ADS-B) is an established surveillance technology providing receivers with aircraft state information including aircraft position (Mode S). However, this position data might be imprecise or even spoofed. Drawing the attention of an air traffic controller to aircraft sending false position data could enhance situational awareness, at the same time reduce work load, and increase general aviation safety. In this paper, we investigate the position verification together with localization of ADS-B transmitters using time difference of arrival (TDOA) methods based on a synchronized sensor network to validate ADS-B position information.