Depth Dependence and Vertical Directionality of Ambient Sea Noise.

Abstract

The relationship between noise depth dependence and vertical directionality is considered in both directions. Under appropriate assumptions approximations for determining the depth-dependence from the vertical directionality at a specific depth are derived. Depth-dependence functions for several canonical directionality functions as well as specific examples is given. Two different approaches for determining the vertical directionality from the depth dependence are considered: an analytic solution is developed for the case that the depth dependence has a particular representation; and error-minimization algorithm is applied when the vertical directionality has a particular form. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1979
Accession Number
ADA081667

Entities

People

  • Raymond C. Cavanagh
  • William W. Renner

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Acoustics
  • Algorithms
  • Ambient Noise
  • Arrays
  • Bottom Bounce
  • Diffraction
  • Frequency
  • Grazing Angles
  • Integral Equations
  • Inverse Problems
  • Linear Programming
  • Losses
  • Measurement
  • Navy
  • Plane Waves
  • Transmission Loss

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Calculus or Mathematical Analysis