高动态GPS抗干扰算法仿真研究

对于高动态条件下GPS(global positioning system)接收机的抗干扰问题,研究等距线阵接收信号模型和基于协方差矩阵扩张的基本原理,并仿真分析了2种基于协方差矩阵扩张的经典抗干扰算法:Mailloux算法和Zatman算法在高动态环境下的作用效果。经过Matlab仿真,结果表明,相比与常规方法,Mailloux方法和Zatman方法在阵元是等距线阵时,都能有效地加宽从干扰方向上形成的零陷,能够提高在高动态环境下的抗干扰效果,使接收机能够捕获卫星信号。

Simulation of High Dynamic GPS Anti?Jamming Algorithm

For the anti-jamming problem of global positioning system(GPS)receiver in high dy?namic environment,We studies the received signal model of equidistant linear array and the basic prin?ciple based on covariance matrix expansion,and simulates and analyzes the effect of two classical anti-jamming algorithms based on covariance matrix expansion:Mailloux algorithm and Zatman algorithm in high dynamic environment.Through Matlab simulation,the results show that compared with the con?ventional method,Mailloux method and Zatman method can effectively widen the null formed from the interference direction when the array element is an equidistant linear array,which can improve the anti-jamming effect in high dynamic environment and enable the receiver to capture satellite signal.