Time Translational Symmetry in GNSS Assisting Time Transfer Spoofing

Takashi Iwamoto, Tomoaki Takewa, and Wataru Tsujita

Abstract:	A spoofing attack that manipulates outputs of a target receiver without being noticed can be damaging threat and is hard to be mitigated even by encryption as well as navigation message authentication. Rapidly evolving software defined radios are increase reality of these attacks. In this paper it is shown that a spoofer can utilize solidified basis of time translational symmetry in physical raws to spoof estimates of timing, which plays a critical role in GNSS. A countermeasure against replying using decomposition of received signal waves based on Bayesian information criterion is presented. Experiment using a reflected signal wave as a “naturally created” replying signal wave shows promising results.
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:	86 - 89
Cite this article:	Iwamoto, Takashi, Takewa, Tomoaki, Tsujita, Wataru, "Time Translational Symmetry in GNSS Assisting Time Transfer Spoofing," Proceedings of the 47th Annual Precise Time and Time Interval Systems and Applications Meeting, Monterey, California, January 2016, pp. 86-89. https://doi.org/10.33012/2016.13151
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