DOA estimation for wideband coherent signals based on the snapshot matrix reconstruction
Bin He · Microcomputer Information · 2009
An effective method is proposed for the problem of the array aperture loss in the spatial smoothing algerithm against coherent signals.It constructs a new matrix by the direct data snapshots and its conjugate inversion and gets the singular value decomposition of covariance matrix of the original data and the new matrix ,then the DOA of coherent signals are estimated by the conventional MUSIC without the aperture loss. Compared with the MMUSIC,ISM and CSM algorithms, the simulation results demonstrate the effectiveness of the method.