Online angle of arrival estimation in the presence of mutual coupling
Ahmad Bazzi, Dirk T. M. Slock, Lisa Meilhac · 2016
A novel algorithm for estimating the Angles of Arrival (AoA) of multiple sources in the presence of mutual coupling is derived. We first formulate an “Equality Constrained Quadratic Optimisation” problem, then derive a suitable MUSIC-like algorithm to solve the aforementioned problem, and thus obtain good estimates of the AoA parameters. Identifiability conditions of the proposed algorithm are also derived. Finally, simulation results demonstrate the Root-Mean-Square Error (RMSE) performance of the algorithm as a function of Signal-to-Noise Ratio (SNR) and number of snapshots, with comparison to an existing method.