Finite Difference Modelling of Scattering by Objects in the Seabed,

Abstract

In this report we describe the theory and some implementation issues of a finite difference code used at SACLANT Centre. In particular, we consider the modelling of attenuation and the excitation of a remote incident field by using Huygen's sources. A series of comparisons of finite difference results with analytical results is performed. The report concludes with a series of computations of scattering of a generalized plane wave from a buried cylinder where the transmitted portion of the generalized plane wave is evanescent. An example of time-reversed propagation of a scattered field is also given.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1996
Accession Number
ADA318848

Entities

People

  • J. A. Fawcett
  • J. L. Grimbergen

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Angle Of Incidence
  • Computations
  • Differential Equations
  • Diffraction
  • Dispersions
  • Equations
  • Frequency
  • Frequency Bands
  • Frequency Domain
  • Nato
  • Phase Velocity
  • Plane Waves
  • Relaxation Time
  • Scattering
  • Standards
  • Time Domain

Readers

  • Acoustical Oceanography.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering