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Performance Analysis of Direct GNSS Spoofing Detection with Accelerometers for Constant Velocity

Keum-Cheol Kwon and Duk-Sun Shim*
International Journal of Control, Automation, and Systems, vol. 20, no. 8, pp.2749-2758, 2022

Abstract : "Global navigation satellite systems (GNSSs) are gaining importance as their main applications in localization and navigation particularly for future autonomous vehicle navigation. A drawback of GNSS for spoofing is the simple structure of the GNSS signal and its weak strength on the Earth¡¯s surface. These conditions can expose civilian users to GNSS spoofing attacks with the potential to cause significant damage. There are many approaches to detecting GNSS spoofing; one category uses independent sensors, such as inertial sensors. Inertial sensors are typically used as tightly coupled GNSS/INS (inertial navigation system) integration to provide consistency checks for position, velocity, or other parameters. However, in this study, a direct consistency check of the acceleration itself is used to detect spoofing and provide the probability density function (PDF) of a proposed decision variable for a constant-velocity case. The proposed decision variable compares the accelerations of the GNSS and accelerometers for the constant-velocity case. The performance of the proposed spoofing detection method is analyzed based on the detection probability of GNSS spoofing. "

Keyword : "Accelerometer, global navigation satellite system (GNSS), inertial navigation system, spoofing detection. "

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