Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (8): 2254-2262.doi: 10.12305/j.issn.1001-506X.2021.08.27

• Guidance, Navigation and Control • Previous Articles     Next Articles

GNSS spoofing interference detection based on variance of SCB

Wenyi WANG1, Jing GONG1,2, Jinming WANG1   

  1. 1. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
    2. Technical Centre of Air Traffic Management Bureau of Civil Aviation Administnation of China, Beijing 100015, China
  • Received:2020-09-02 Online:2021-07-23 Published:2021-08-05

Abstract:

With the increasing types of global navigation satellite system (GNSS) spoofing devices, the detection of spoofing attacks has become an urgent problem in the world. Most of the spoofing processes do not cause significant changes in the signal parameters, which makes it more difficult to detect spoofing successfully. In this paper, intermediate spoofing attack and signal model are firstly analyzed. Then, an intermediate spoofing interference detection method for the fluctuation of zero-crossing variation of S curve bias (SCB) in code tracking loop is proposed. After that, the real signals from texas spoofing test battery (TEXBAT), which is a public database of global position system (GPS) satellite signals issued by the radio navigation laboratory of the university of Texas. The detection performances of the original SCB algorithm, Ratio algorithm and composite signal quality monitor algorithm and the varience applied to the above three algorithms are compared. Experimental results show that the SCB variance detection algorithm has better performance.

Key words: satellite navigation, spoofing interference, code tracking loop, S curve bias, moving variance

CLC Number: 

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