Pattern sidelobe level suppression on antenna array with arbitrary geometry by the IRLS algorithm

Abstract

A novel method for suppressing antenna array radiation pattern sidelobes while keeping the main lobe width constant has been proposed. The method is based on the IRLS (iterative reweighted least squares) algorithm, which has found wide application in the field of radar pulse compression. The algorithm is not restricted by the array geometry and the mutual element coupling and has no limitations regarding the array excitation coefficients and array radiation pattern. In comparison with the ECF (envelope constrained filter) method, it showed much better results in sidelobe suppression. The algorithm implementation is simple and straightforward.