Improvements to Passive Acoustic Tracking Methods for Marine Mammal Monitoring

This project investigated and implement several methods to improve the accuracy, efficiency, and applicability of model based passive acoustic methods to track marine mammals. Methods were developed and tested that: 1) Invert for soundspeed profiles, hydrophone position and hydrophone timing offset...

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Bibliographic Details
Main Author: Nosal, Eva-Marie
Other Authors: University of Hawaii Honolulu United States
Format: Text
Language:English
Published: 2016
Subjects:
CETACEANS
ACOUSTIC TRACKING
HYDROPHONES
Marine mammals
Passive acoustic monitoring
Localization
Multiple source
Sparse array
whales
BIOACOUSTICS
Marine Mammal Monitoring
Online Access:http://www.dtic.mil/docs/citations/AD1009144
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD1009144
Description
Summary:This project investigated and implement several methods to improve the accuracy, efficiency, and applicability of model based passive acoustic methods to track marine mammals. Methods were developed and tested that: 1) Invert for soundspeed profiles, hydrophone position and hydrophone timing offset in addition to animal position. 2) Use improve maximization schemes in model-based tracking. 3) Use received sound pressure levels in addition to arrival times for tracking. This project also developed methods to simultaneously track multiple animals in cases where it is difficult/impossible to separate and associate calls from individual animals.

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