A novel separable approach to estimate two-dimensional angles of arrival with high resolution

In this paper, the authors present a novel separable approach based on multiple uniform linear arrays for two-dimensional(2-D) high-resolution direction-of-arrival (DOA) estimation. The 2-D DOA estimation is performed by the 1-D orthogonal processing over each linear array´s measurements simultaneously. The new approach proposed is highly parallel, and the so-called `frequency annexation´ phenomenon has no effect on its application. Simulation results are provided to illustrate the effectiveness of the new approach