DOA estimator for multiple coherently distributed sources with symmetric angular distribution

In applications such as mobile communications and sonar where the effect of angular spread may not be ignored, the direct application of most high-resolution methods may lead to inaccurate estimation of direction of arrival (DOA). Though the MUSIC and ESPRIT method can be generalized for coherently distributed sources. For uniform linear array, a novel DOA estimator is proposed by using the generalized eigenvalue decomposition rather than resort to 1 or 2-dimensional search. Simulation results are also presented to demonstrate the effectiveness of the proposed method, especially in case of sources with different angular distribution.