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.
History
Publication title
Journal of the Acoustical Society of America
Volume
143
Pagination
EL25-EL30
ISSN
0001-4966
Department/School
Institute for Marine and Antarctic Studies
Publisher
Acoustical Society of America
Place of publication
Ste 1 No 1, 2 Huntington Quadrangle, Melville, USA, Ny, 11747-4502
Rights statement
Copyright 2018 the Acoustical Society of America
Repository Status
Open
Socio-economic Objectives
Oceanic processes (excl. in the Antarctic and Southern Ocean)