Improving MUSIC performance in snapshot deficient scenario via weighted signal-subspace projection
Gui-min Xu · Systems engineering and electronics · 2008
Aiming at the performance of MUSIC algorithm decreases in DOA estimation with snapshot deficient scenario,a new method based on weighted signal subspace projection is proposed.The signal-subspace with reciprocal of principle eigenvalue is weighted in this method.Then the result is added over MUSIC spatial spectrum. The high-resolution of noise subspace processing is remained,and robustness via signal subspace processing is improved in this method.Theoretical and statistical analysis show that its performance is better than that of MUSIC,especially in snapshot deficient scenario.