Method and apparatus to improve ADS-b security

a technology of security and ads, applied in direction finders using radio waves, instruments, reradiation, etc., can solve the problems of not being able to use commercial cell phone towers, radical overhaul of ads-b system and is not cost-effective or practical
US20090009395A9Inactive Publication Date: 2009-01-08ERA SYSTEMS CORPORATION
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Patent Information

Authority / Receiving Office
US Ā· United States
Patent Type
Applications(United States)
Current Assignee / Owner
ERA SYSTEMS CORPORATION
Publication Date
2009-01-08
Estimated Expiration
Not applicable Ā· inactive patent

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Abstract

Security of ADS-B transmissions is improved in a first embodiment to detect position spoofing. The annunciated position source may then be compared with the derived source and a determination is made regarding the difference between the results. Any position difference greater than an amount significantly greater than the combination of the error sources is then a cause for concern and can be used to generate an alert. In a second embodiment, alerting may be based on identification spoofing. From these sources a correlated ID is available which will have an associated confidence based on the number of sources and the level of agreement on the information. Aircraft dynamics may be correlated with the announced ID for consistency. A priori information on the aircraft and location, such as schedule information, and normal operations, may be used to assist in the confidence of aircraft identity. In a third embodiment, alerting may be based on spoofing of identity and position.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application is a Continuation-In-Part application of U.S. patent application Ser. No. 10 / 457,439, filed on Jun. 10, 2003, (RANN-0013) now U.S. Pat. No. 6,885,340 and incorporated herein by reference in its entirety; U.S. patent application Ser. No. 10 / 457,439 in turn is a Continuation-In-Part application of U.S. patent application Ser. No. 09 / 971,672, filed on Oct. 9, 2001, (RANN-0009) entitled ā€œMETHOD AND APPARATUS FOR IMPROVING THE UTILITY OF AUTOMATIC DEPENDENT SURVEILLANCEā€, now U.S. Pat. No. 6,567,043 which in turn is a Divisional Application of Ser. No. 09 / 516,215, filed Mar. 5, 1999, (RANN-0005) entitled ā€œMETHOD AND APPARATUS FOR IMPROVING THE UTILITY OF AUTOMATIC DEPENDENT SURVEILLANCEā€, now U.S. Pat. No. 6,633,259, all of which are incorporated herein by reference in their entirety; U.S. patent application Ser. No. 10 / 457,439 is also a Continuation-In-Part of U.S. patent application Ser. No. 10 / 319,725, filed Dec. 1...

Claims

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