Prototype Development of an Online Spoofer Localization System Using Raw GNSS Measurements of Android Smartphones

Zhongxiao Wang, Hong Li, Jian Wen, Mingquan Lu

Abstract:	With the wide use of mobile navigation, the number of GNSS portable terminals such as smartphones without any ability of spoofing defense is growing rapidly, which induces a critical threat to our daily lives. To cope with the challenge of spoofing attacks, in this paper, we are going to develop a prototype of an online spoofer localization system, using raw GNSS measurements captured from Android smartphones in the spoofing area. We assume that each smartphone receives both authentic signals and spoofing signals simultaneously. With spoofing signals discriminated, a normal PVT solution can be recovered with authentic signals and then TOA measurements of spoofing signals can be captured from the smartphone and form a log file. We select a combination of smartphones with a minimum number of users and a maximum positioning accuracy. Each smartphone selected for spoofer localization uploads its logged data file to the server. Synchronization of observations and iterative least square (LS) algorithm will be carried out online to solve the position of the spoofer. Some difficulties and challenges, such as smartphones geometry and time synchronization are discussed in this paper. A fundamental field experiment is conducted to verify the feasibility of our proposed scheme.
Published in:	Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021) September 20 - 24, 2021 Union Station Hotel St. Louis, Missouri
Pages:	1989 - 1999
Cite this article:	Wang, Zhongxiao, Li, Hong, Wen, Jian, Lu, Mingquan, "Prototype Development of an Online Spoofer Localization System Using Raw GNSS Measurements of Android Smartphones," Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), St. Louis, Missouri, September 2021, pp. 1989-1999. https://doi.org/10.33012/2021.17995
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