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本文分析了通道幅相误差对空间目标参数估计算法MUSIC的影响 .推导了幅相误差下空域谱的统计表达式 ,揭示了幅相误差对空域谱影响的机理 .计算机仿真证明了理论分析的正确性 .结果表明 :幅相误差降低了空域谱峰值 ,从而造成方向估计误差 ,也降低了分辨能力 .本文给出的结果对阵列设计人员具有一定的参考价值
In this paper, the influence of channel amplitude and phase error on spatial target parameter estimation algorithm MUSIC is analyzed. The statistical expression of space spectrum error is derived and the mechanism of amplitude and phase error on spatial spectrum is revealed. Computer simulation proves that the theoretical analysis is correct The results show that the amplitude and phase errors reduce the airspace peak, resulting in the error of direction estimation and the resolving power.The results presented in this paper have certain reference value to the array designer