The system model and analysis of all-digital temporal and spatial anti-jamming for GPS receivers

GPS signal is very weak and easily influenced by interference or jamming. An antenna array with adaptive algorithm combing with temporal anti-jamming processing can be used to mitigate interference and improve GPS signal acquisition and tracking performance. This paper addresses an all digital temporal and spatial anti-jamming implementation scheme based on adaptive antenna array. Temporal adaptive Altering techniques can effectively suppress narrowband interference, which is less ability to code with broadband interference. However, the presence of an antenna array allows the receiver to operate in spatial domain in addition to time or frequency domain, which can improve the performance of GPS receiver with broadband interference. Simulation results show the scheme can greatly enhance the robustness of GPS receiver in a large number of interference signals.