The Theory of the Sound Field Near a Caustic

Abstract

Impulse analysis of the wave equation leads to a convenient approximation for the intensity over a caustic, the field being an interference pattern between two rays. The result, which holds over much of the sonar frequency band, involves only a simple addition to conventional ray-tracing computations. A critical experiment test of the theory is proposed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1973
Accession Number
AD0787831

Entities

People

  • M. J. Daintith

Organizations

  • Admiralty Underwater Weapons Establishment, Portland

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Acoustics
  • Amplitude
  • Asymptotic Series
  • Bandwidth
  • Computations
  • Convergence Zones (Sonar)
  • Equations
  • Frequency
  • Frequency Bands
  • Grazing Angles
  • High Resolution
  • Intensity
  • Peak Values
  • Ray Tracing
  • Travel Time
  • Wave Equations

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering