Fast and Robust GSC Beamformer based on Variable Diagonal Loading

In this paper, a fast and robust GSC beamforming algorithm based on variable diagonal loading is proposed using multistage Wiener filter techniques. Firstly, the loading level can be accurately determined through MSWF decomposition. In conjunction with match filter loading method, the efficient technique achieves the advantages of robust capabilities. The whole algorithm does not requiring computing the covariance matrix and its eigen-decomposition, so the computation load is greatly saved. Simulations demonstrate its effectiveness and robustness