Robust supergain array in noise fields

The supergain array is known to be highly sensitive to slight errors in its array parameters. A method which offers robustness against array perturbation errors is presented. The beamformer weights which optimizes the array gain can be obtained by incorporating the perturbation error statistics in the covariance matrix of the noise field. In addition, the proposed method is equivalent diagonal loading if the perturbation errors are isotropic and uncorrelated.