Scintillation in a shallow water waveguide

Abstract

The waveguide invariant summarizes the pattern of constructive and destructive interference between acoustic modes propagating in the ocean waveguide. For many sonar signal-processing schemes, it is essential to know the correct numerical value for the waveguide invariant. While conventional beamforming can estimate the ratio between the waveguide invariant and the range to the source, it cannot unambiguously separate the two terms. In the present work, striation-based beamforming is developed. It is shown that the striation-based beamformer can be used to produce an estimate for the waveguide invariant that is independent of the range. Simulation results are presented.

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Document Details

Document Type
Technical Report
Publication Date
Jul 22, 2012
Accession Number
ADA574061

Entities

People

  • Daniel Rouseff
  • Lisa Zurk

Organizations

  • University of Washington

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Communications
  • Acoustic Measurement
  • Acoustics
  • Beam Forming
  • Crystal Lattice Vibrations
  • Frequency
  • Frequency Shift
  • Internal Waves
  • Passive Sonar
  • Physics Laboratories
  • Scintillation
  • Shallow Water
  • Signal Processing
  • Simulations
  • Sonar
  • Underwater Acoustic Communications
  • Water

Fields of Study

  • Engineering
  • Physics

Readers

  • Acoustical Oceanography.
  • Microwave Engineering.
  • Theoretical Analysis.