Sediment Interface And Volume Reverberation Modeling With The Parabolic Approximation
Price
Free (open access)
Transaction
Volume
69
Pages
20
Published
2003
Size
862.21 kb
Paper DOI
10.2495/AC030271
Copyright
WIT Press
Author(s)
K. B. Smith, L.-S. Li, B.-C. Lee, & H. Kao
Abstract
Sediment interface and volume reverberation modeling with the parabolic approximation K. B. Smith, L.-S. Li, B.-C. Lee, & H. Kao Department of Physics Naval Postgraduate School, USA Abstract A reverberation model based on the parabolic approximation has been developed that includes sediment interface and volume perturbations. A multiple fonvardlsingle backscatter approximation is made, and the structure of the solution is found to depend on the two-way propagation with a scattering strength scaling dependent on the local properties of the perturbation. The model has been implemented for continuous wave (CW) signals to predict mean reverberation pressure levels and for broadband pulse signals to generate complex reverberation structures in the time-domain. The spatial (vertical) correlation of these predicted signals is then analyzed in an attempt to extract information on the underlying characteristics of the perturbation. Preliminary analysis suggests that reverberation due to the volume pert
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