Wideband adaptive LMS beamforming using QMF subband decomposition for sonar

Author

Charafeddine, H. ; Groza, V.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Univ. of Ottawa, Ottawa, ON, Canada

fYear

2013

fDate

23-25 May 2013

Firstpage

431

Lastpage

436

Abstract

This paper describes the utilization of wideband LMS adaptive beamforming with QMF filterbanks decomposition for sonar application. The obtained results showed that applying the new algorithm yields better results than the time domain LMS beamformer (TD). The subband LMS beamformer isolates the interference in its own band and uses that band beamformer to steer a null in its direction, this capability enables the other beamformers to adapt independently without been affected by the interference.

Keywords

adaptive filters; array signal processing; channel bank filters; decomposition; least mean squares methods; quadrature mirror filters; radar interference; sonar arrays; sonar signal processing; time-domain analysis; QMF filterbank subband decomposition; TD; interference; sonar application; time domain LMS beamformer; wideband adaptive LMS beamforming; Antennas; Array signal processing; Arrays; Interference; Least squares approximations; Signal to noise ratio; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Computational Intelligence and Informatics (SACI), 2013 IEEE 8th International Symposium on

Conference_Location

Timisoara

Print_ISBN

978-1-4673-6397-6

Type

conf

DOI

10.1109/SACI.2013.6609013

Filename

6609013