Comparison of Several DOA Methods Based on Spatial Spectrum Estimation

Spatial Spectrum Estimation is usually used in the Direction-of-Arrival (DOA) estimation. A number of DOA methods have emerged these years. This paper introduces the theory of Multiple Signal Classification (MUSIC) firstly. Then it studies the modified MUSIC method. The modified method solves the problem of the source correlation. Finally, several DOA methods are compared and analyzed in simulations.