Extended DOA-Matrix Method for DOA Estimation via Two Parallel Linear Arrays

In this letter, the issue of direction of arrival (DOA) estimation for narrowband signals with two parallel linear arrays is discussed, and an extended DOA-Matrix method is derived. Specifically, the proposed method makes full use of the auto-correlation and cross-correlation information by constructing an extended DOA matrix. Subsequently, the auto-paired DOA estimates can be calculated by the eigenvalues and eigenvectors of the extended DOA matrix. Moreover, the proposed method outperforms the traditional DOA-Matrix method which partially neglects the auto-correlation and cross-correlation information. Simulation results are provided to validate the superiority of the proposed method.