2D angle and array response estimation with arbitrary array configuration

Based on second-order statistics, we propose a novel method to estimate jointly the 2D angles of multiple independent sources and the corresponding array response. The method imposes no geometric constraint on the array and most of the sensors can be uncalibrated. With M sensors, 2D DOA and array response of M-1 sources can be estimated in a closed form without costly 2D search or optimization. Thus large amount of hardware and computation can be significantly saved.