Two-Dimensional DOA Estimation of Coherent Signals Based on the Toeplitz Matrix Reconstruction
Xiaobo Li · Electronic Information Warfare Technology · 2012
For two-dimensional DOA estimation of coherent signals,a new algorithm is proposed based on the Toeplitz matrix reconstruction.Through the eigenvalue decomposition of the matrixes using the upright L-shape array,this algorithm gets noise subspaces.According to the MUSIC algorithm,elevations can be estimated by one-dimensional spectral peak searching and each corresponding azimuth can be estimated through searching based on each elevation estimations.Compared with spatial smoothing algorithm,without reducing the aperture of array,the ability of estimation is improved by this method.Finally the simulation results show the method is effective.