Tracking calling depths and movements of North Atlantic right whales using multipath localization

The track and calling depths of a North Atlantic right whale (NARW) recorded by 10 bottom-mounted Autonomous Acoustic Recording Units (ARUs) in the Stellwagen Bank National Marine Sanctuary was determined using the Direct Reflected Time Difference of Arrival (DRTD) localization method. An autocorrel...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2012-09, Vol.132 (3_Supplement), p.2009-2009
Main Authors: Valtierra, Robert D., VanParijs, Sofie M., Holt, R. G., Cholewiak, Danielle M.
Format: Article
Language:English
Online Access:Get full text
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Summary:The track and calling depths of a North Atlantic right whale (NARW) recorded by 10 bottom-mounted Autonomous Acoustic Recording Units (ARUs) in the Stellwagen Bank National Marine Sanctuary was determined using the Direct Reflected Time Difference of Arrival (DRTD) localization method. An autocorrelation technique was used to extract direct-reflected time difference of arrival information from recorded NARW up-calls containing several overlapping multipath signal arrivals. The method’s feasibility was tested using data from play back transmissions to localize an acoustic transducer at a known depth and location. The method was then used to track an hour of movements and depths of a single NARW using periodic up-calls for localization purposes.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4755441