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航空学报  2013 

基于Kalman滤波的GPS/INS接收机自适应干扰抑制方法

DOI: 10.7527/S1000-6893.2013.0070, PP. 1414-1423

Keywords: 惯导信息辅助GPS接收机,Householder变换,广义旁瓣相消,干扰抑制,Kalman滤波

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Abstract:

考虑到惯导信息辅助GPS(GPS/INS)接收机对干扰抑制实时性的要求,提出一种基于Kalman滤波的GPS/INS接收机自适应干扰抑制方法。自适应广义旁瓣相消(GSC)多采用低复杂度最小均方(LMS)算法更新权矢量,收敛速率较低,严重时会导致接收机定位中断。首先利用Householder变换构建GSC下支路的阻塞矩阵,用于阻塞任意二维阵型阵列接收的期望信号;再用Kalman滤波自适应更新下支路权矢量,从而有效提高阵列输出信干噪比(SINR)。理论分析和仿真结果说明本文方法可有效抑制干扰对接收机的影响,且具有实时性高的特点。

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