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A phase-compensated distorted wave Born approximation representation of the bistatic scattering by weakly scattering objects : application to zooplankton

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dc.contributor.author Chu, Dezhang
dc.contributor.author Ye, Zhen
dc.date.accessioned 2008-10-23T14:26:10Z
dc.date.available 2008-10-23T14:26:10Z
dc.date.issued 1999-10
dc.identifier.citation Journal of the Acoustical Society of America 106 (1999): 1732-1743 en
dc.identifier.uri http://hdl.handle.net/1912/2528
dc.description Author Posting. © Acoustical Society of America, 1999. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 106 (1999): 1732-1743, doi:10.1121/1.428036. en
dc.description.abstract The distorted wave Born approximation (DWBA) method has been successfully used in modeling the acoustic backscattering by weakly scattering zooplankton [Stanton et al., J. Acoust. Soc. Am. 94, 3463–3472 (1993), Wiebe et al., IEEE J. Ocean. Eng. 22(3), 445–464 (1997)]. However, the previously developed DWBA model ignores the imaginary part of the scattering amplitude and thus results in a zero-extinction cross section. As a consequence, the model fails to predict the scattering-induced attenuation which could be important under certain circumstances. In this paper, a phase-compensated DWBA-based approximation is presented. The improved method allows us to compute not only the scattering strength but also the acoustic attenuation. The new scattering model is validated by comparing with the existing exact solution for certain representative finite objects. The results from this study can be applied to bioacoustic applications where the attenuation due to scattering and/or multiple scattering by zooplankton is relevant, and where this information might be used to infer the acoustic properties of live animals. en
dc.description.sponsorship This work was partially supported by the National Science Foundation under Grant No. OCE-9730680. en
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Acoustical Society of America en
dc.relation.uri http://dx.doi.org/10.1121/1.428036
dc.subject DWBA en
dc.subject Backscatter en
dc.subject Acoustic wave scattering en
dc.subject Bioacoustics en
dc.title A phase-compensated distorted wave Born approximation representation of the bistatic scattering by weakly scattering objects : application to zooplankton en
dc.type Article en
dc.identifier.doi 10.1121/1.428036


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