Systems Engineering and Electronics ›› 2024, Vol. 46 ›› Issue (5): 1484-1492.doi: 10.12305/j.issn.1001-506X.2024.05.03

• Electronic Technology • Previous Articles    

GNSS spoofing jamming detection based on altimeter assistance

Yiyu XU1, Changfeng CHEN2, Xuelin YUAN1,*, Zhengkun CHEN1, Zhijian ZHOU1   

  1. 1. School of Electronic and Communication Engineering, Sun Yat-Sen University, Shenzhen 518107, China
    2. Southwest China Research Institute of Electronic Equipment, Chengdu 610036, China
  • Received:2022-06-19 Online:2024-04-30 Published:2024-04-30
  • Contact: Xuelin YUAN

Abstract:

The barometric altimeter can obtain accurate elevation data without being affected by external electromagnetic interference. The use of barometric altimeters to assist the global navigation satellite system(GNSS) in spoofing detection has significant advantages. In order to evaluate the ability of the barometric altimeter in GNSS spoofing detection and improve detection probability, the system error is first modeled and analyzed, and the differential integrated autoregressive moving average (ARIMA) model is used to process the barometric altimeter and GNSS measurement results. Meanwhile, a self-adaptive threshold detection method based on moving variance is proposed by calculating Euclidean distance to construct a data space. The experimental results show that with a false alarm rate of 10-6, the detection rate reaches 92%, and the proposed method can effectively monitor potential spoofing threats on elevation information, which enhances the reliability of the GNSS system.

Key words: barometric altimeter, satellite navigation, altitude data fusion, moving variance, spoofing detection

CLC Number: 

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