The Performance Testing and Evaluation of Anti-spoofing Techniques Using Single or Double Antenna

Abstract

The miniaturization and low-cost of GNSS spoofing equipment have made the security of GNSS more concerned. The demand, research and application of anti-spoofing technology have also attracted more attention. For the spoofing signals transmitted by a single radiation source, it is a feasible anti-spoofing way to distinguish the authentic and counterfeit signals using the signal space characteristics. The anti-spoofing technology with single-antenna and dual-antenna are two typical representatives among them. This paper analyzes and compares the above two existing anti-spoofing technique. They are classified into two categories of spoofing detection and recognition algorithms, which are based on the correlation of amplitudes with single-antenna and the consistency of arrival time differences with dual-antenna. At the same time, this paper implements an anti-spoofing receiver architecture, and builds an experiment platform combined with sophisticated receiver-based spoofer. It is used to test and evaluate the performance of the above anti-spoofing technologies. A series of experiments were carried out with the single-antenna and dual-antenna anti-spoofing algorithms in different modes. Then the influence factors of performance and the advantages and disadvantages of the algorithms were analyzed and summarized. The results of this research have reference value for the development of anti-spoofing receiving equipment.