A low complexity DOA estimation algorithm for moving sources
Gang Liu · Journal of Circuits and Systems · 2011
Aiming at the problem of moving sources direction-of-arrival(DOA) estimation,a novel algorithm is proposed,which combines a simplified data projection method(DPM) and the fast Root-MUSIC(FR-MUSIC).The distinct point of proposed algorithm is that taking advantage of the sub-matrix inversion of the FR-MUSIC,the orthogonalization of the original DPM is removed,so that the computational load of the subspace-tracking procedure is reduced to the lowest bound of that of the algorithms in the some class,and the proposed algorithm does not loss any performance of DOA estimation.Compared with a classical algorithm of the kind,the novel algorithm possesses similar performance but lower computational complexity,and the results of simulation verify its validity.