Improve Method on DOA Estimation Accuracy of Signal Subspace Sensitivity Based on Mutual Coupling Matrix
چکیده
The performance of the DOA algorithm and many other high resolution methods degrades severely with the high correlated multipath signals encountered in target low angle tracking. DOA estimation error is overcome by deriving new version of the effects model error and sensitivity analysis on subspace methods. An improved algorithm for DOA estimation of coherent signal is proposed. This algorithm has based on the structure of mutual coupling matrix of uniform linear array and effects model error sensitivity analysis. The performance of these two approaches is then compared with that of the well-known MUSIC algorithm using spatial smoothing. Through simulation, we show that the proposed method offers significantly improved estimation resolution and accuracy relative to existing method.