GPS Anti-Jamming Modeling and Simulation Analysis for Navigation System Based on Antenna Array

In this paper, the navigation model combining GPS and INS is detailedly analyzed, whose extended Kalman filter (EKF) algorithm is given. The principle and mathematical model of multiple MVDR beamforming is given. On the basis of this, the anti-jamming model of navigation system based on GPS/INS and antenna array is proposed. The simulation results show that the position error of single beamforming technique because of the limited degree of freedom with the large of interference signals is greater than multiple beamforming technique, and that multiple MVDR beamforming can effectively mitigate a number of interference signals and ensure the reliability working of navigation system.