An Adaptive-Adaptive Beamforming Algorithm with Nulls Widening

By constructing an extended interference covariance matrix and the auxiliary beamspace, an improved adaptive-adaptive array processing method is presented based on nulls widening in this paper. It resolves an issue that the adaptive-adaptive algorithm can´t reject interference effectively when the perturbation or the rapid motion of jammers occurs, which improves robustness greatly. As a partially adaptive beamforming algorithm, it is more suitable for the practical engineering application. Computer simulations demonstrate the validity of the approach.