Shallow-Water Acoustic Reverberation

Abstract

The long-term goals are: to develop a theoretical model for predicting the reverberation in shallow water, to derive both small-angle seabed reflectivity and scattering strength from reverberation data at low frequency, and to understand the physical mechanism of sea bottom scattering. The scientific objective of this research is to investigate the effects of sea bottom on sound propagation, reverberation and signal coherence. Our objectives are (1) to analyze the range/ depth dependence of reverberation intensity and its spatial coherence for frequencies of 200-3000 Hz. (2) To compare the theoretical predictions on reverberation with at-sea experimental data. (3) To derive seabottom acoustic parameters from reverberation data, such as bottom reflectivity and scattering as a function of frequency and angle.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA572629

Entities

People

  • J. X. Zhou

Organizations

  • Georgia Tech

Tags

DTIC Thesaurus Topics

  • Acoustic Phenomena
  • Acoustics
  • Data Analysis
  • Engineering
  • Experimental Data
  • Frequency
  • Grazing
  • Grazing Angles
  • Intensity
  • Mechanical Engineering
  • Models
  • Reflectivity
  • Reverberation
  • Scattering
  • Shallow Water
  • Water
  • Yellow Sea

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Wave Propagation and Nonlinear Chaotic Dynamics.