BASE 04 Transmission Loss Measurement and Modelling

Abstract

A previous contract resulted in the addition of the ray theory program Bellhop to the reverberation inversion program BREVER. This was done to allow inversion of reverberation results calculated from acoustic data recorded during the BASE 04 trials. However tests with Bellhop using parameters from the BASE 04 site indicated shortcomings in that program. The current contract began with test runs of CASS, a potential Bellhop replacement for reverberation inversions. The test results indicated that CASS would work properly for the analysis area. Accordingly, BREVER was enhanced to allow it to also use CASS, and reverberation inversion was performed. The inversion results were used to model transmission loss, and these modelled values were compared to transmission loss data calculated from measured data. Because of this contract the BREVER User's Guide was expanded to describe the use of the CASS-enabled version of the program.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2006
Accession Number
ADA472975

Entities

People

  • C. Calnan

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Acoustics
  • Background Noise
  • Classification
  • Computer Programs
  • Computers
  • Contracts
  • Data Sets
  • Losses
  • Measurement
  • Noise
  • Operating Systems
  • Reverberation
  • Scattering
  • Security
  • Tactical Decision Aids
  • Transmission Loss

Readers

  • Acoustical Oceanography.
  • Computational Modeling and Simulation