CONTROL OF PEAK SIDELOBE LEVEL IN ADAPTIVE ARRAYS

Adaptive beamforming techniques are now widely used to reject interfer ence (jammer/clutter) signals in radar, communication, and sonar appli cations, In adaptive arrays using the sample matrix inversion (SMI) al gorithm, inadequate estimation of the covariance matrix results in ada ptive antenna patterns with high sidelobes and distorted mainbeams. In this paper, a method is proposed to precisely control the peak (rathe r than average) sidelobe level of adapted array patterns, The proposed method is also generalized to adaptive array antennas with moderate b andwidth and large random amplitude and phase errors, Theoretical anal ysis and simulation results are provided to illustrate the performance of the method proposed.