Simultaneous estimation of DOA and angular spread of incident radio waves by DOA-Matrix method with SLS and SAGE algorithms

In estimating DOA of incident waves with high accuracy, we often have to take into consideration the angular spread of each wave due to reflection, diffraction, and scattering. As a method of estimating DOA and AS simultaneously, SAGE-DOA-Matrix method was proposed which uses DOA-Matrix method along with SAGE algorithm. In this paper, we further improve the estimation performance of the method by using SLS algorithm.