Sidelobe Suppression for Capon Beamforming with Mainlobe to Sidelobe Power Ratio Maximization

TL;DR

This paper proposes a novel sidelobe suppression method for Capon beamforming by maximizing the mainlobe to sidelobe power ratio, resulting in improved beamformer performance.

Contribution

It introduces a mainlobe to sidelobe power ratio constraint into Capon beamforming to effectively suppress sidelobes while maintaining mainlobe power.

Findings

Outperforms traditional Capon beamformer in sidelobe suppression

Achieves higher mainlobe to sidelobe power ratio

Demonstrates improved beamforming performance in simulations

Abstract

High sidelobe level is a major disadvantage of the Capon beamforming. To suppress the sidelobe, this paper introduces a mainlobe to sidelobe power ratio constraint to the Capon beamforming. it minimizes the sidelobe power while keeping the mainlobe power constant. Simulations show that the obtained beamformer outperforms the Capon beamformer.