Overview of anti-jamming technologies for satellite navigation systems

With the increasing complexity of the electromagnetic environment in space, navigation signals are susceptible to various interferences when they reach the ground receivers, and may even fail to work normally due to interference. In view of the above situation, this article analyzes and summarizes the anti-jamming technology of the satellite navigation system. The interference of the navigation system is classified, time domain and transform domain anti-jamming technology are studied, and then the space-domain anti-jamming technology based on array antenna, space-time anti-jamming technology and adaptive beamforming technology are studied. The detailed research and summary of anti-jamming technology of global satellite navigation system in this article are of practical significance to the in-depth research and realization of navigation anti-jamming technology.