An Evaluation of the Vestigial Signal Defense for Civil GPS Anti-Spoofing

Kyle D. Wesson, Daniel P. Shepard, Jahshan A. Bhatti, and Todd E. Humphreys

Abstract:	A receiver-autonomous non-cryptographic civil GPS antispoofing technique called the vestigial signal defense (VSD) is defined and evaluated. This technique monitors distortions in the complex correlation domain to detect spoofing attacks. Multipath and spoofing interference models are developed to illustrate the challenge of distinguishing the two phenomena in the VSD. A campaign to collect spoofing and multipath data is described, which specific candidate VSD techniques can be tested against. Test results indicate that the presence of multipath complicated the setting of an appropriate spoofing detection threshold.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	2646 - 2656
Cite this article:	Wesson, Kyle D., Shepard, Daniel P., Bhatti, Jahshan A., Humphreys, Todd E., "An Evaluation of the Vestigial Signal Defense for Civil GPS Anti-Spoofing," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 2646-2656.
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