A two-dimensional arrival angles estimation for L-shaped array based on tensor decomposition

This paper discusses the method of Two-Dimensional Angle-Of-Arrival (2-D AOA) estimation of an L-shaped array based on a tensor decomposition algorithm. The proposed method achieves a high-resolution performance with the assistance of the multiple invariance modeling and the uniqueness property of tensor decomposition. Not only for uncorrelated signals, the tensor-decomposition-based method is also capable to process coherent signals. The authors adopt a modified L-shaped array configuration in which the azimuth and elevation angles can be exploited independently. Moreover, by such configuration, the Cross Correlation Matrix (CCM) is employed to accomplish pair-matching between estimated parameters of both axes. Numerical simulations verified the effectiveness of the proposed method.