Matched Field Noise Suppression based on Matrix Filter

Author

Lei, Bo ; Yang, Kunde ; Ma, Yuanliang

Author_Institution

Northwestern Polytech. Univ., Xi´´an

fYear

2007

fDate

Sept. 29 2007-Oct. 4 2007

Firstpage

1

Lastpage

5

Abstract

The tow-ship noise suppression is of the key of towed line array sonar system. Referencing to the novel concept matched field noise suppression (MFNS), the matched field noise suppression based on matrix filter, called MF-CBF in this paper, is proposed to suppress the tow-ship noise. The response of MF- CBF to tow-ship noise is set to be zero and unit to signal direction vector. The optimal matrix filter is computed with second order cone (SOC) constraints algorithm. In the simulation results, it is shown that the performance of MF-CBF has been great improved with matrix filter compared with CBF. The tow-ship noise is suppressed and signal power is kept. This is consonant with the theoretical analysis. Also the robustness of the MF-CBF was analyzed. The performance of the method has a slight degradation with noise replica vector mismatch.

Keywords

filtering theory; geophysical signal processing; matrix algebra; noise; oceanographic techniques; sonar arrays; sonar signal processing; matched field noise suppression; noise replica vector mismatch; optimal matrix filter; second order cone; signal direction vector; tow-ship noise suppression; towed line array sonar system; Acoustic noise; Acoustical engineering; Degradation; Marine vehicles; Matched filters; Noise cancellation; Noise reduction; Noise robustness; Sonar equipment; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2007

Conference_Location

Vancouver, BC

Print_ISBN

978-0933957-35-0

Electronic_ISBN

978-0933957-35-0

Type

conf

DOI

10.1109/OCEANS.2007.4449335

Filename

4449335