Abstract
Intentional spoofing interference can cause damage to the navigation terminal and threaten the security of a global navigation satellite system (GNSS). For spoofing interference, an anti-spoofing algorithm based on pseudorange differences for a single receiver is proposed, which can be used to detect simplistic and intermediate spoofing attacks, as well as meaconing attacks. Double-difference models using the pseudorange of two adjacent epochs are established followed by the application of Taylor expansion to the position relationship between the satellite and the receiver (or the spoofer). The authenticity of the signal can be verified by comparing the results of the proposed spoofing detection algorithm with the traditional least squares method. The results will differ when spoofing is present. The parameter setting of the proposed algorithm is introduced. The algorithm has the advantage of both simplicity and efficiency and needs only a single receiver and pseudorange data. A NovAtel receiver is adopted for the actual experiments. The Texas spoofing test battery (TEXBAT), as well as two other simulation experiments are used to verify the performance of the algorithm. The simulation results validate the feasibility and effectiveness of the algorithm.
Highlights
As global satellite navigation systems (GNSSs) play an increasingly important role in society and industry, the security of these systems is a crucial component
The main contributions of this paper can be summarized as follows: (1) we build the signal pseudorange model based on the signal transmission path; (2) a novel spoofing detection algorithm is proposed based on the pseudorange model, which only needs one single receiver and does not require changing the hardware; (3) we validate the proposed algorithm on real experiments, showing its effectiveness and simplicity in real engineering applications
By comparing the results of the traditional least squares method to the spoofing detection algorithm proposed in this paper, we can identify the authenticity of the signal
Summary
As global satellite navigation systems (GNSSs) play an increasingly important role in society and industry, the security of these systems is a crucial component. [24], the authors proposed a network monitoring mechanism based on the time difference of arrival properties between spoofing and authentic signals This network contains several receivers and one central processing component. The main contributions of this paper can be summarized as follows: (1) we build the signal pseudorange model based on the signal transmission path; (2) a novel spoofing detection algorithm is proposed based on the pseudorange model, which only needs one single receiver and does not require changing the hardware; (3) we validate the proposed algorithm on real experiments, showing its effectiveness and simplicity in real engineering applications. The paper is organized as follows: Section 2 gives the theoretical analysis of a single receiver against the spoofing signal; Section 3 describes three different test datasets, which are used to validate the algorithm performance; Section 4 concludes the paper
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