Seabed Scattering Model from Low Frequency Reverberation Measurements in Shallow Water

Abstract

LONG-TERM GOALS: The long-term goal of this work is: to develop a low-frequency (LF) seabed scattering model from shallow-water (SW) reverberation measurements. The model can be used to predict SW reverberation and echo-to-reverberation ratio in a frequency range of 100-3000 Hz, and to analyze LF seabed scattering mechanisms at low grazing angles (LGA), as well as to extract the LF seabed scattering parameters. OBJECTIVES: The scientific objectives of this research in FY2011 are: (1) To integrate the energy-flux method for SW reverberation with physics-based seabed scattering models in the angular domain; (2) To derive LF seabed scattering strength as a function of angle and frequency from SW reverberation measurements; and (3) To reveal the physics of the reverberation-derived LF seabed scattering function.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2011
Accession Number
ADA571704

Entities

People

  • Ji-xun Zhou

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Phenomena
  • Acoustic Propagation
  • Acoustics
  • Engineering
  • Frequency
  • Frequency Bands
  • Grazing Angles
  • Measurement
  • Mechanical Engineering
  • Physics
  • Reverberation
  • Scattering
  • Seabed
  • Shallow Water
  • Transmission Loss
  • Water
  • Waveguides

Readers

  • Acoustical Oceanography.