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Abstract

GNSS spoofing, generated by a repeater, is very similar to a true navigation signal, and is not easy to be detected. The statistical properties between satellite channel and spoofing channel are different. Motivated by this fact, we propose a GNSS spoofing detection method based on this difference. Assuming the repeater is located on the ground, the jamming channel is a Rayleigh channel. Navigation satellite channel can be modeled as a Lutz model, which has the “good” and “bad” states. These two states follow the Rice distribution and Rayleigh-Lognormal distribution, respectively. Three kinds of goodness-of-fit tests are applied to detect the GNSS spoofing and their performances are compared. Finally, the effectiveness of the proposed method is verified by simulations.

Keywords

Satellite navigation spoofing detection satellite channel model goodness-of-fit test

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GNSS repeater detection based on channel difference

Abstract

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References