Three-dimensional modeling of acoustic backscattering from fluid-like zooplankton

The Journal of the Acoustical Society of America
Andone C LaveryD Chu

Abstract

Scattering models that correctly incorporate organism size and shape are a critical component for the remote detection and classification of many marine organisms. In this work, an acoustic scattering model has been developed for fluid-like zooplankton that is based on the distorted wave Born approximation (DWBA) and that makes use of high-resolution three-dimensional measurements of the animal's outer boundary shape. High-resolution computerized tomography (CT) was used to determine the three-dimensional digitizations of animal shape. This study focuses on developing the methodology for incorporating high-resolution CT scans into a scattering model that is generally valid for any body with fluid-like material properties. The model predictions are compared to controlled laboratory measurements of the acoustic backscattering from live individual decapod shrimp. The frequency range used was 50 kHz to 1 MHz and the angular characteristics of the backscattering were investigated with up to a 1 degree angular resolution. The practical conditions under which it is necessary to make use of high-resolution digitizations of shape are assessed.

References

Jan 24, 1998·The Journal of the Acoustical Society of America·T K StantonR L Eastwood
Jan 24, 1998·The Journal of the Acoustical Society of America·T K StantonP H Wiebe
Aug 24, 2000·The Journal of the Acoustical Society of America·T K StantonJ D Warren

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Citations

Feb 6, 2008·The Journal of the Acoustical Society of America·Andone C LaveryNancy Copley
Feb 4, 2006·The Journal of the Acoustical Society of America·Gareth L LawsonTimothy K Stanton
Jun 21, 2012·The Journal of the Acoustical Society of America·Wu-Jung LeeTimothy K Stanton
Jun 21, 2011·The Journal of the Acoustical Society of America·Edward H Pees
May 3, 2007·The Journal of the Acoustical Society of America·Paul L D Roberts, Jules S Jaffe
Jan 29, 2009·The Journal of the Acoustical Society of America·Benjamin A JonesTimothy K Stanton
Aug 7, 2008·The Journal of the Acoustical Society of America·Paul L D Roberts, Jules S Jaffe
Jan 3, 2016·The Journal of the Acoustical Society of America·J Michael JechKouichi Sawada
Sep 21, 2004·The Journal of the Acoustical Society of America·D Benjamin ReederTimothy K Stanton
Dec 3, 2003·The Journal of the Acoustical Society of America·Andone C LaveryTimothy K Stanton
Sep 16, 2005·Applied Optics·James H Churnside, Richard E Thorne

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