Ocean Bottom Modeling for Ray Acoustics

Abstract

Akima cubic spline and spatial Fourier series (SFS) techniques for modeling ocean bottom contours from bathymetric data were comparatively analyzed. SFS methods encountered difficulty in ocean bottom reconstruction despite several enhancements to the fundamental technique. Both Akima cubic spline and SFS approaches proved unsatisfactory in reproducing first and second- order derivatives for several arbitrarily shaped ocean bottom contours. A simple reflection angle algorithm for arbitrary one-dimensional bottom models was examined and found to be accurate. A graphical demonstration of acoustic ray interaction with the ocean bottom using a variety of mathematical ocean bottom models and the reflection angle algorithm was conducted.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA246287

Entities

People

  • Trevor N. Jones

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustics
  • Algorithms
  • Angle Of Incidence
  • Bathymetry
  • Computational Science
  • Computations
  • Computer Programs
  • Computer Simulations
  • Computers
  • Extrapolation
  • Fourier Series
  • Geometry
  • Mathematical Models
  • New York
  • Numerical Analysis
  • Reflection
  • Seabed

Readers

  • Acoustical Oceanography.
  • Approximation Theory.
  • Ballistic Missile Meteorology