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Estimating drift of directional sonobuoys from acoustic bearings

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Miller, BS, Wotherspoon, S ORCID: 0000-0002-6947-4445, Rankin, S, Calderan, S, Leaper, R and Keating, JL 2018 , 'Estimating drift of directional sonobuoys from acoustic bearings' , Journal of the Acoustical Society of America, vol. 143, no. 1 , EL25-EL30 , doi: 10.1121/1.5020621.

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Abstract

A maximum likelihood method is presented for estimating drift direction and speed of a directional sonobuoy given the deployment location and a time series of acoustic bearings to a sound source at known position. The viability of this method is demonstrated by applying it to two real-world scenarios: (1) during a calibration trial where buoys were independently tracked via satellite, and (2) by applying the technique to sonobuoy recordings of a vocalising Antarctic blue whale that was simultaneously tracked by photogrammetric methods. In both test cases, correcting for sonobuoy drift substantially increased the accuracy of acoustic locations.

Item Type: Article
Authors/Creators:Miller, BS and Wotherspoon, S and Rankin, S and Calderan, S and Leaper, R and Keating, JL
Keywords: drift, sonobouys, acoustic bearings
Journal or Publication Title: Journal of the Acoustical Society of America
Publisher: Acoustical Society of America
ISSN: 0001-4966
DOI / ID Number: 10.1121/1.5020621
Copyright Information:

Copyright 2018 the Acoustical Society of America

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