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该文研究了基于均匀圆阵阵列的信号波达方向估计问题 .对一维角度估计采用MUSIC算法 ,通过谱峰搜索得到信号的方位角 ;对二维角度估计采用模式激励法 ,对均匀圆形阵列的输出信号进行模式激励 ,使其阵列流形具有类似于均匀线性阵列的形式 ,在此基础上 ,对波达矩阵进行特征分解 ,由各特征值对应的特征向量处理得到对应信号的到达方向 .给出的计算机仿真结果证实了它们的有效性 .
In this paper, we study the problem of signal direction-of-arrival estimation based on uniform array of circular arrays. The MUSIC algorithm is used to estimate the one-dimensional angle and the azimuth of the signal is obtained through the spectral peak search. For the two-dimensional angle estimation, The output signals of the array are mode excited so that their array manifolds have a form similar to a uniform linear array. On the basis of this, the wavefront matrix is decomposed by the eigenvector corresponding to each eigenvalue to obtain the corresponding signal arrival direction The computer simulation results presented validate their validity.