Reverberation Fluctuations from a Smooth Seafloor

Abstract

High-frequency shallow-water reverberation statistics were measured from a smooth, sandy, featureless seafloor. The reverberation statistics are presented as a function of source frequency (20-180 kHz), grazing angle (30 deg, 20 deg, 9.50 deg) and source beamwidths (1.2 deg-2.75 deg). Generally, the reverberation statistics did not follow a Rayleigh fading model. The model dependence of the reverberation statistics exhibited a complex behavior that ranged from near Gaussian to beyond log-normal. The results show that small changes in the source frequency, grazing angles, and beamwidths caused large variations in the model dependence of the reverberation statistics. High frequency, Acoustic scattering, Backscattering, Forward scattering, Sound transmission, Underwater acoustics.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1993
Accession Number
ADA275972

Entities

People

  • Edgar G. Kennedy
  • Steve Stanic

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Measurement
  • Acoustic Scattering
  • Acoustics
  • Backscattering
  • Computer Science
  • Detection
  • Distribution Functions
  • False Alarms
  • Forward Scattering
  • Frequency
  • Grazing Angles
  • High Resolution
  • Military Research
  • Probability
  • Scattering
  • Seabed
  • Statistics

Readers

  • Acoustical Oceanography.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Radar Systems Engineering.