RANDI: Research Ambient Noise Directionality Model

Abstract

A computer model for calculating the vertical and horizontal directionality of ambient noise and some of the results which have been obtained are discussed. The model considers three sources of surface-generated anisotropic noise, one source of surface-generated isotropic noise and two sources of volumetric isotropic noise. Noise levels are obtained for various propagation conditions and for different sensor depths. Results agree well with experimental data, and it is shown that the model can be a useful tool in the planning of ambient noise measurement experiments and in the analysis of results.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1973
Accession Number
AD0760692

Entities

People

  • R. A. Wagstaff

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Acoustic Measurement
  • Acoustics
  • Ambient Noise
  • Bottom Loss
  • Computers
  • Frequency
  • Frequency Response
  • Generators
  • Grazing Angles
  • Measurement
  • Noise Generators
  • Oceans
  • Procedures (Computers)
  • Reflection
  • Sound Pressure
  • Surveillance

Readers

  • Acoustics.
  • Computational Modeling and Simulation
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering