Quarterly Progress Report Number 4, 1 April - 30 June 1972.

Abstract

This quarter the reflection and scattering models were further developed, and a review of the literature preliminary to the development of a convergence zone propagation model was completed. In Section II, expansion of the heuristic scattering model to include composite (both large and small scale roughness) surface statistics is given which sould improve backscattering predictive capabilities. This model does not include slope correction terms but has the advantage of simplicity. The more rigorous theoretical model which includes slope corrections terms is also expanded to allow for composite surface roughness. A survey of the literature covering convergence zone propagation is summarized in Section III. An approach is outlined for the development of a convergence zone model using a Green's function expansion. This technique results in an ordered integral expansion where each integral can be associated with a particular multipath. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 12, 1972
Accession Number
ADA043871

Entities

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • C4I
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acoustics
  • Backscattering
  • Composite Materials
  • Contour Integrals
  • Convergence
  • Convergence Zones (Sonar)
  • Diffraction
  • Frequency
  • Grazing Angles
  • Incoherent Scattering
  • Integrals
  • Literature
  • Roughness
  • Scattering
  • Statistics
  • Surface Roughness

Readers

  • Business Analytics
  • Calculus or Mathematical Analysis
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering