An efficient Direction-Of-Arrival estimation method for Uniform Rectangular Array based on array covariance matrix element properties

This paper presents a computationally efficient Direction-Of-Arrival (DOA) estimation method for Uniform Rectangular Array (URA), which is effective for both correlated and uncorrelated sources. The proposed method is an extension of our previous study for Uniform Linear Array (ULA), basically based on the relation between the elements of array covariance matrix, does not need iteration, angular peak-search and spatial smoothing. Performance of the proposed method is evaluated through computer simulation.