Localization of acoustic sources in an enclosed space by double layer beamforming array

Author

Liu, Yue-Chan ; He, Yuan-An ; Sun, Chao ; Shang, Da-Jing

Author_Institution

Key Lab. of Sci. & Technol. on Underwater Acoust., Harbin Eng. Univ., Harbin, China

fYear

2011

fDate

9-11 Dec. 2011

Firstpage

192

Lastpage

195

Abstract

Acoustic sources´ localization by beamforming technology in an enclosed space is not easy due to the interference of reflected waves. Previous methods of beamforming are based on a free field hypothesis; therefore, problems are appeared when this technology is used in reverberation. The paper presents a method combined with particle velocity beamforming for locating acoustic sources in an enclosure by using double parallel surfaces beamforming array. The interference of reflected waves can be removed by taking twice-weighted for double layer array. The performances of this method are simulated by locating multiple coherent acoustic sources in shallow water. The simulation results show the effectiveness of proposed method in an enclosed space.

Keywords

acoustic arrays; acoustic radiators; acoustic signal processing; acoustic wave interference; acoustic wave reflection; array signal processing; underwater sound; acoustic source localization; double layer array; double parallel surface beamforming array; enclosed space; free field hypothesis; multiple coherent acoustic sources; particle velocity beamforming; reflected wave interference; reverberation; shallow water; twice-weighted array; Acoustic measurements; Array signal processing; Arrays; Interference; Microphones; Reverberation; Double layer beamforming array; Enclosed space; Particle velocity beamforming;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2011 Symposium on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-1075-8

Type

conf

DOI

10.1109/SPAWDA.2011.6167224

Filename

6167224