CORRELATION STUDY OF THE UNDERWATER DIFFRACTION PATTERN OF A CORRUGATED AIR-WATER INTERFACE

Abstract

This experimental investigation examines the underwater diffraction pattern of a corrugated surface insonified by a warbletone (wide band FM) acoustic source. Sound field data is obtained using a variable-level correlation system to measure the pressure amplitudes of the first two forward and back-scattered orders. These measurements are carried out primarily for frequencies near those for which the various scattered orders fail to appear e. g. near the 'cut-off' frequencies.

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Document Details

Document Type
Technical Report
Publication Date
Jul 25, 1968
Accession Number
AD0683783

Entities

People

  • J. G. Duffey Jr

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Amplifiers
  • Angle Of Incidence
  • Calibration
  • Diffraction
  • Electronic Equipment
  • Far Field
  • Forward Scattering
  • Frequency
  • Generators
  • Geometry
  • Hydrophones
  • Measurement
  • Scattering
  • Signal Generators
  • Specular Reflection
  • Transducers
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Radio communications and signal processing.