Effects of Shallow Water Bottom Interface Roughness and Volume Fluctuations on Broadband Pulse Resolution.

Abstract

Typical acoustic propagation in shallow water environments is dominated by bottom-interacting paths. The effects of rough bottom interfaces and sediment volume fluctuations are investigated using model simulations. A numerical study of low-frequency (approx. 2OO Hz) broadband pulse propagation is presented and several characterizations of bottom factors are examined. In particular, the variations of the interface rms roughness and a volume fluctuation strength constant on the time resolution of the broadband pulse are investigated. It is shown that interface roughness is the dominant factor in the degradation of pulse resolution.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1996
Accession Number
ADA313437

Entities

People

  • Mei-chun Yuan

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Broadband
  • Degradation
  • Environment
  • Frequency
  • Frequency Bands
  • Roughness
  • Sediments
  • Shallow Water
  • Simulations
  • Water

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Thin Film Deposition Science.