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Method and apparatus for improving ADS-B security

  • US 7,423,590 B2
  • Filed: 04/30/2007
  • Issued: 09/09/2008
  • Est. Priority Date: 03/05/1999
  • Status: Expired due to Fees
First Claim
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1. A system for authenticating position signals of an aircraft, comprising:

  • a first input for receiving an annunciated aircraft position from at least one aircraft generated source, the annunciated aircraft position indicating an annunciated position of the aircraft,a second input for receiving a derived aircraft position from a non-aircraft generated source, indicating position of the aircraft,a comparator, for comparing the annunciated aircraft position with the derived aircraft position and generating an alarm if the annunciated aircraft position is not within a predetermined range of the derived aircraft position.

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