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由于介质顶对来波的发散作用,到达平面阵的波是非平面波。本文研究基于介质顶阵的到达角(DOA)估计方法。通过对采样协方差矩阵进行远场近似(FFA)处理,用高分辨特征结构技术(MUSIc算法)进行DOA估计,得到了比较好的结果。计算机模拟结果证实了该方法的有效性。
Due to the divergence effect of the medium on the incoming wave, the wave reaching the plane array is a non-plane wave. In this paper, we study the method of DOA estimation based on the array top matrix. Through the far-field approximation (FFA) processing of the sampling covariance matrix, the DOA estimation using the high-resolution feature-structure technique (MUSIc algorithm) has achieved good results. Computer simulation results confirm the effectiveness of this method.