DOA Estimation Based on Single Snapshot
Jie Yang · Journal of Hangzhou Dianzi University · 2012
Compared to the traditional subspace algorithm,the propagator method does not require the eigenvalue decomposition or singular value decomposition,and therefore it has lower computational complexity.In order to overcome the difficulty that the DOA estimation needs large snapshot number,a new algorithm is proposed in this paper to build a Toeplitz Hermitian data matrix.Based on the propagator method and root-MUSIC algorithm,rapidly estimate the DOAs of incident signals are achieved even in the case of coherent signals and a single snapshot.Simulation results verify that the proposed method has the better performance as spatial smoothing method with less computational complexity.