2D-DOA Estimation for Uniform Rectangular Array using Noncircular HOSVD Method

This paper discusses the problem of twodimensional direction-of-arrival (2D-DOA) estimation for uniform rectangular array (URA). A noncircular high-order singular value decomposition (NC-HOSVD) is developed for 2DDOA estimation. By employing the NC property of the source matrix as well as the multidimensional structure of the received data, an expanded three-order tensor model is formulated, which doubles the number of detectable sources. A signal subspace method is constructed to obtain 2D-DOA with the HOSVD method. The proposed NC-HOSVD method outperforms the ESPRIT and the HOSVD methods. The experimental results demonstrate the effectiveness of the proposed method.