Acoustic vector sensor beamforming reduces masking from underwater industrial noise during passive monitoring

TitleAcoustic vector sensor beamforming reduces masking from underwater industrial noise during passive monitoring
Publication TypeJournal Article
Year of Publication2016
AuthorsThode A.M, Kim K.H, Norman R.G, Blackwell S.B, Greene C.R
JournalJournal of the Acoustical Society of America
Volume139
PaginationEL105-EL111
Date Published2016/04
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000374974900003
Keywordsarray; Beaufort Sea; blue; migration; whales
Abstract

Masking from industrial noise can hamper the ability to detect marine mammal sounds near industrial operations, whenever conventional (pressure sensor) hydrophones are used for passive acoustic monitoring. Using data collected from an autonomous recorder with directional capabilities (Directional Autonomous Seafloor Acoustic Recorder), deployed 4.1 km from an arctic drilling site in 2012, the authors demonstrate how conventional beamforming on an acoustic vector sensor can be used to suppress noise arriving from a narrow sector of geographic azimuths. Improvements in signal-to-noise ratio of up to 15 dB are demonstrated on bowhead whale calls, which were otherwise undetectable using conventional hydrophones. (C) 2016 Acoustical Society of America

DOI10.1121/1.4946011
Student Publication: 
No
Research Topics: 
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