Modeling of Line-Array Transducers near Finite-Width Soft Reflectors

Abstract

Farfield directivity patterns for line-array transducers with finite- aperture pressure-release reflectors are calculated by using a two-dimensional source-strength integral method. The directivity patterns obtained when plane and wedge reflectors are shown for both single and multiple sources. Normalized radiation impedances are calculated in order to determine the source-reflector and the source-source interactions. The effects of source size and reflector width are also investigated. The accuracy of the numerical technique is determined by comparing calculated predictions with the measured nearfield and farfield pressure distributions from a line source at the focus of a parabolic reflector. Methods of resolving apparent anomalies in the numerical integral solution are also discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jul 10, 1973
Accession Number
AD0764529

Entities

People

  • Ronald P. Radlinski

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Bodies
  • Boundaries
  • Classification
  • Geometric Forms
  • Geometry
  • Impedance
  • Laboratory Procedures
  • Materials
  • Measurement
  • Military Research
  • Numerical Integration
  • Physics Laboratories
  • Radiation
  • Radiation Patterns
  • Radiation Resistance
  • Security
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Phased Array Antenna Design.