Robust adaptive beamforming using IAA‐based interference‐plus‐noise covariance matrix reconstruction

A novel robust adaptive beamforming algorithm based on a reconstructed covariance matrix is proposed to combat the desired signal look direction error. First, the iterative adaptive approach (IAA) algorithm is performed to acquire the true signal direction and the spatial spectrum simultaneously. Secondly, the IAA spatial spectrum is used to reconstruct the interference‐plus‐noise covariance matrix. Compared with other reconstruction‐based algorithms, this approach is capable of dealing with coherent interferences without any optimisation procedures.