Progress Report on Grant N00014-94-1-0201 (The Catholic University of America).

Abstract

In previous work, a modal approach was used to study random volume scattering in a shallow channel. Here, we shall show how the effects of a rough channel surface may be included in the formulation. To include the effects of the rough surface, the modes are taken to be dependent on the range and transverse coordinates in addition to the depth coordinate. The propagation is studied in terms of the ensemble averaged two point coherence function and the equation governing the coherence function is derived. The general method for volume scattering is given in detail in the above reference. Here it is shown how the surface scattering terms may be treated in this approach. The two point coherence function is expressed as the sum over both self modal and cross modal coherence functions. The difference between the self modal coherence functions and the cross modal coherence functions is discussed. A numerical example is given using typical shallow water parameters.

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Document Details

Document Type
Technical Report
Publication Date
Nov 09, 1994
Accession Number
ADA298821

Entities

People

  • Mark J. Beran

Organizations

  • The Catholic University of America

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Waveguides
  • Backscattering
  • Bessel Functions
  • Data Analysis
  • Data Processing
  • Deep Oceans
  • Electrical Engineering
  • Electronic Mail
  • Engineering
  • Equations
  • Experimental Data
  • Frequency
  • Internal Waves
  • Refractive Index
  • Scattering
  • Shallow Water

Readers

  • Acoustical Oceanography.
  • Calculus or Mathematical Analysis
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering