Backscattering from Rough Interfaces and the Parabolic Approximation

Abstract

Iterative solutions of coupled parabolic wave equations are examined to determine the validity of applying this method to predict low frequency ocean acoustic reverberation. Solutions for backscattering from a random rough interface between two media of differing wave number are obtained in the form of an expansion in powers of the rough interface excursion from its mean value. This expansion is found to differ significantly from the corresponding expansion obtained by applying perturbation theory to the full elliptic wave equation.

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Document Details

Document Type
Technical Report
Publication Date
Apr 12, 1991
Accession Number
ADA235184

Entities

People

  • S. T. Mcdaniel

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Backscattering
  • Bragg Scattering
  • Diffraction
  • Equations
  • Frequency
  • Geometry
  • Grazing Angles
  • Military Research
  • Perturbation Theory
  • Perturbations
  • Physics Laboratories
  • Plane Waves
  • Refraction
  • Scattering
  • Wave Equations
  • Wave Propagation
  • Waves

Readers

  • Calculus or Mathematical Analysis
  • Thin Film Deposition Science.
  • Wave Propagation and Nonlinear Chaotic Dynamics.