Global Navigation Satellite System Terminal Spoofing and Defense Techniques

With the development of satellite navigation technology, GNSS security issues represented by spoofing have received widespread attention. How to improve GNSS terminal spoofing defense capabilities has become a research hotspot in the field of navigation. Summarized the research progress of GNSS spoofing and spoofing defense in the past decade, and sorted out the principles and technical means of spoofing from two aspects: generated spoofing and repeat spoofing. The GNSS terminal spoofing defense technology is classified and summarized into three categories: cryptographic defense, signal processing defense, and antenna (array) defense, and its cutting-edge methods are summarized and compared. On this basis, the development trend of GNSS terminal Spoofing and defense was summarized and prospected, providing direction reference for in-depth research on related technologies.