Bottom Scattering In Acoustic Propagation Modeling.

Abstract

The problem of propagating acoustic energy in the ocean subject to boundary roughness is considered. Both a small range-step 'Monte Carlo' approach in which the acoustic signal is scattered from an ocean bottom consisting of the deterministic bathymetry with a stochastic component superimposed, and a scattering kernel method, in which the pressure field vector is analyzed at each range-step and modified by application of a scattering operator, are discussed. Results of computations using the former are presented. A higher-order, energy-conserving, finite-element parabolic equation model is used.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1994
Accession Number
ADA294593

Entities

People

  • Robert D. Purrington

Organizations

  • Tulane University of Louisiana

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Properties
  • Acoustic Waves
  • Acoustics
  • Differential Equations
  • Equations
  • Frequency
  • Geometry
  • Grazing Angles
  • Helmholtz Equations
  • Partial Differential Equations
  • Power Spectra
  • Scattering
  • Seabed
  • Three Dimensional
  • Two Dimensional
  • Wave Equations

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Computational Modeling and Simulation
  • Wave Propagation and Nonlinear Chaotic Dynamics.