Environmental Influence on Shallow Water Bottom Reverberation

Abstract

In this work, the influences of various environmental scenarios on the bottom interface and volume reverberation in shallow water were numerically analyzed. Based on similar modeling reverberation geometry defined in previous works, the numerical analyses were conducted for broadband pulse signals to generate complex reverberation structures in the time-domain. The reverberation model used is based on the well- documented Parabolic Equation (PE) approximation The environmental scenarios are divided into three main categories. They include different sound speed profiles, different levels of bottom interface roughness and different bottom volume fluctuations. While one category is being analyzed, the other two are held constant. The various analyses include broadband two-way reverberation levels comparisons, vertical correlation analysis and power spectral analysis.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2002
Accession Number
ADA402735

Entities

People

  • Lee Boon Chuan

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Acoustics
  • Broadband
  • Correlation Analysis
  • Equations
  • Frequency
  • Geometry
  • Information Science
  • Long Wavelengths
  • Numerical Analysis
  • Physical Properties
  • Physics Laboratories
  • Refractive Index
  • Scattering
  • Statistical Analysis
  • Three Dimensional
  • Time Domain
  • Two Dimensional

Readers

  • Acoustics.
  • Computational Modeling and Simulation
  • Fluid Dynamics.