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System and method to protect the privacy of ADS-B messages

  • US 10,573,185 B2
  • Filed: 04/04/2017
  • Issued: 02/25/2020
  • Est. Priority Date: 06/14/2016
  • Status: Active Grant
First Claim
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1. A system for protecting the privacy of automatic dependent surveillance-broadcast (ADS-B) messages, the system comprising at least one ground station comprising:

  • a ground ADS-B transponder configured for receiving an ADS-B message;

    a ground station control unit comprising;

    an aircraft position determination module for retrieving an aircraft position included in the ADS-B message;

    an operating conditions module for determining the fulfillment of one or more operating conditions, said operating conditions at least including determining if the aircraft position is an actual aircraft position; and

    a fake aircraft position generator for computing one or more fake aircraft positions using a geometric projective transformation of the actual aircraft position over a surface;

    wherein the ground station control unit is configured for broadcasting one or more fake ADS-B messages including the fake aircraft positions if the operating conditions are met.

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