Surface Duct, Rough Surface Scattering, and Cusped Caustic Improvements for Fact

Abstract

The TAEAS Program provides environmental acoustics support to a number of Fleet commands. This support includes the development and maintenance of the tactical prediction model, ASRAP. Recently SAI has developed a set of modifications to the FACT Model (the transmission-loss component of ASRAP) to improve the treatment of surface ducts, rough surface scattering and cusped caustics. These model updates were assembled in an internally consistent form and provided to NORDA 320 under this contract. Complete technical documentation, source code listings and test cases are presented in a companion report.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1981
Accession Number
ADA126250

Entities

People

  • C. W. Spofford
  • F. J. Ryan
  • W. W. Renner

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustics
  • Caustics
  • Computer Programs
  • Contracts
  • Grazing Angles
  • Losses
  • Maintenance
  • Military Research
  • Naval Operations
  • Plastic Explosives
  • Reflection
  • Scattering
  • Specular Reflection
  • Transmission Loss

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Instructional Design and Training Evaluation.
  • Wave Propagation and Nonlinear Chaotic Dynamics.