An Improved Householder Multistage Wiener Filter Method for Interference Suppression of Space-time Navigation Receivers
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摘要: 该文针对抑制GPS信号中期望信号方向的冲激毛刺干扰影响问题,提出改进的Householder多级维纳滤波(HMSWF)方法,该方法用具有最小模的样本商作为复权,替代部分HMSWF的权值计算,新方法应用于GPS接收机空时抗干扰中,能很好抑制期望信号方向的冲激毛刺干扰对自适应权值计算的影响。计算机仿真结果验证了算法的优良抗干扰性能和良好的抑制期望信号方向冲激毛刺干扰影响的能力。Abstract: Due to suppression the influence of impulsive noise spikes (outliers) from desired signal direction of arrival in Global Positioning System (GPS) signals, an improved Householder-based MultiStage Wiener Filter (HMSWF) is proposed. The method substitutes parts of the weights of the Householder-based MultiStage Wiener Filter for the minimal module weights, which have the minimal module of the samples quotient, and adoptes in space-time anti-jamming processing in GPS receiver. The improved method has the prominent ability of restricting the influence of the impulsive noise spikes (outliers) from desired signal direction of arrival to adaptive weights. Computational simulation results indicate the method achieves better interference suppression ability and a good performance in reducing the influence of the impulsive noise spikes (outliers) to adaptive weights.
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