通过改进MUSIC 算法,分析了影响DOA 精度的各种因素.同时,计算机对非相干信号源的仿真结果表明:信噪比、阵元数目对改进MUSIC 谱有一定的影响;较小的入射角对相邻信号源的空间谱的分辨率比较大入射角有明显的改善。关键词: MUSIC 算法; 天线阵列; DOA; 精度Abstract: reasons were analyzed which affected the precision of DOA through modified MUSIC arithmetic. At the same time, here it is presented by computer simulations for non-coherent signals that Signal-to-Noise Ratio and the number of sensors had definite effects on modified MUSIC spectrum, and that a less angle of incidence had more obviously improved on spacial spectrum of adjacent signals than the bigger.Key words: MUSIC arithmetic; antenna array; DOA; precision
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