Sediment Interface And Volume Reverberation Modeling With The Parabolic
Approximation
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
Keywords
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