基于均匀圆阵的信号源DOA估计方法

该文研究了基于均匀圆阵阵列的信号波达方向向估计问题，对一维角度估计采用MUSICK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，其使阵列流形具有类似于均匀线性阵列的列式，在此基础上，对波达矩阵进行分解，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。

Estimation of DOA for Uniform Circular Array

In the paper, algorithms are presented to estimate the DOA of uncorrelated signals incident on a uniform circular array(UCA). Through spectral search of MUSIC algorithm, one-dimensional angle can be estimated. The mode excitation method is used to estimate the two-dimensional angle. Transform the manifold matrix of UCA into one with a form similar to that of a ULA, then estimate the DOA from the eigenvectors of the DOA matrix respectively. The performance of the methods is demonstrated by simulations.