ADS-B Signal Verification Using a Coherent Receiver

W.J.M. Huygen, J. Sun, J.M. Hoekstra

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Automatic Dependent Surveillance-Broadcast (ADS-B) enables aircraft to periodically broadcast their flight states such as position and velocity. Compared to classical radar surveillance, it increases update rate and accuracy. Currently, Mode S Extended Squitter is the most common implementation for ADS-B. Due to the simplicity of Mode S design, ADS-B signals are prone to injections. This study proposes a cost-effective solution that verifies the integrity of ADS-B signals using coherent receivers. We design the verification approach by combining the signal’s direction of arrival, estimated from the multi-channel data, with the target bearing calculated from ADS-B messages. By using another high-performance software-defined radio transceiver, we also conduct real signal injection experiments to validate our approaches
Original languageEnglish
Number of pages10
JournalEngineering Proceedings
Issue number5
Publication statusPublished - 2021
Event9th OpenSky Symposium - online event, Brussels, Belgium
Duration: 18 Nov 202119 Nov 2021


  • ADS-B
  • coherent receiver
  • angle of arrival
  • signal verification


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