Accession Number : AD1008476


Title :   Improvements to Passive Acoustic Tracking Methods for Marine Mammal Monitoring


Descriptive Note : Technical Report,01 Jan 2012,31 Dec 2015


Corporate Author : University of Hawaii Honolulu United States


Personal Author(s) : Nosal,Eva-Marie


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1008476.pdf


Report Date : 02 May 2016


Pagination or Media Count : 14


Abstract : 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 sound speed 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.


Descriptors :   acoustic tracking , sound pressure , hydrophones , monitoring , underwater acoustics , aquatic animals


Distribution Statement : APPROVED FOR PUBLIC RELEASE