A ROBUST DIRECT DATA DOMAIN LEAST SQUARES BEAMFORMING WITH SPARSE CONSTRAINT
Ping Zhang, Jun Li, Ai Zhi Zhou, Hong Bo Xu, Jian Bi · Progress In Electromagnetics Research C · 2013
A robust direct data domain least squares (D 3 LS) beamforming algorithm that is capable of reducing the sidelobe level of the beam pattern is presented. By exploiting the sparsity of the desired beam pattern, the proposed method can enhance the performance with its lower sidelobe level and deeper null for interference while the robustness against steering vector mismatch is increased when a proper regularization parameter is selected. Simulation results demonstrate the efiectiveness of the proposed method.