Robust adaptive beamforming using iterative variable loaded sample matrix inverse

In the presence of steering vector (SV) mismatch, a novel iterative variable loading robust adaptive beamforming approach is presented in a new perspective. The proposed method searches for the desired array SV iteratively based on the relationship between the optimal weight vector and the assumed SV of standard Capon beamformer, which avoids any Lagrange multiplier methodology or the convex optimisation methods in each iteration. Simulation results demonstrate the superior performance of the proposed method.