Non-linear, adaptive array processing for underwater source localization and sonar interference suppression

A method is introduced where blind source separation (BSS) of acoustical sources is combined with spatial processing to remove non-Gaussian, broadband interferers from space-time displays such as bearing track recorder (BTR) displays. This differs from standard techniques such as placing nulls in the direction of interferers. The algorithm performance is compared to adaptive beamforming techniques, such as minimum variance distortionless response beamforming (MVDR). Simulations and experiments using two acoustic sources were run to verify algorithm performance.