基于托普利兹矩阵集重构的 相干信源波达方向估计

Most of the state-of-the-art Toeplitz matrix reconstruction algorithms for direction-of-arrival (DOA) estimation of coherent signals use partial correction or covariance matrix information from the received signals, which leads to the incomplete information utilization, and denoising preprocessing is needed in some methods. To overcome this disadvantage, a modified algorithm is presented by adopting the entire correlation information of the received data from all array sensors to reconstruct a set of Toeplitz matrices. After Hermitian transpositing and forward/backward averaging, the equivalent full rank covariance matrix is utilized for coherent signals DOA estimation combined the ESPRIT algorithm with low computation. The presented method avoids denoising processing and the simulation results show the effectiveness of the proposed method.