Detecting GNSS Spoofing using a Network of Hardware Oscillators

Md Tanvir Arafin, D.M. Anand, Gang Qu

Abstract:	In the face of growing concern about spoofing attacks on Global Navigation Satellite Systems (GNSS) transmissions, we propose a scheme to cross validate GNSS based timing against intrinsic properties of local hardware oscillators. We demonstrate our approach as being able to detect certain types of spoofing attacks on the timing reference signal using an ensemble detector prototype currently in development. Our primary contribution is a linear belief filter applied to a set of low-cost oscillators, organized in a maximum likelihood clock ensemble. Our approach is intended to improve the sensitivity of conventional threshold based detectors that compare time offset between the GNSS stabilized reference and a local free running detector clock to detect changes in offset or slew rate.
Published in:	Proceedings of the 47th Annual Precise Time and Time Interval Systems and Applications Meeting January 25 - 28, 2016 Hyatt Regency Monterey Monterey, California
Pages:	74 - 79
Cite this article:	Arafin, Md Tanvir, Anand, D.M., Qu, Gang, "Detecting GNSS Spoofing using a Network of Hardware Oscillators," Proceedings of the 47th Annual Precise Time and Time Interval Systems and Applications Meeting, Monterey, California, January 2016, pp. 74-79. https://doi.org/10.33012/2016.13135
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