Estimating Geomorphology and Setting the Scale Partition with a Composite-Roughness Scattering Model

Abstract

Scattering from the seafloor is often assumed to be controlled by two spatial scales: the larger scale associated with reflections from plane facets and the smaller one associated with diffuse scattering from height variations. Choosing the wavenumber for this partitioning has proven to be important but troublesome. For this work scattering data is simulated using Helmholtz- Kirchhoff or physical optics theory and selected input geomorphology. These data are inverted using a simpler two-scale roughness model. The work introduces a new criterion for effecting this partition based on setting a roughness parameter equal to unity. The criterion is shown to be valid for the cases analyzed based on the ability of the inversion model to cover the input geomorphology. Bottom scattering, Reverberation.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA275974

Entities

People

  • Jerald W. Caruthers
  • Jorge C. Novarini

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Acoustics
  • Angle Of Incidence
  • Composite Materials
  • Diffraction
  • Frequency
  • Geometry
  • Geomorphology
  • Military Research
  • Reflection
  • Reverberation
  • Roughness
  • Scattering
  • Seabed
  • Simulations
  • Spectra
  • Two Dimensional

Readers

  • Acoustical Oceanography.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computational Modeling and Simulation