The Inverse Fast Field Program (IFFP): An Application to the Determination of the Acoustic Parameters of the Ocean Bottom

Abstract

The problem of estimating the acoustic field produced by a point source located in an environment which is arbitrarily stratified with depth only has received considerable attention. Various models exist which provide reasonable results provided sufficient information about the environment and source characteristic is available. This paper is concerned with solving for the inverse of this problem, i.e., information about the environment, in particular the impedance at the ocean-bottom interface is sought from a knowledge of the received acoustic field and the source which produced it. The theoretical formulation of the scheme is presented and its numerical implementation is discussed and illustrated for three examples of successive orders of environmental complexity.

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Document Details

Document Type
Technical Report
Publication Date
Aug 05, 1977
Accession Number
ADA053769

Entities

People

  • F. R. Dinapoli

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Fields
  • Bottom Bounce
  • Convergence Zones (Sonar)
  • Equations
  • Frequency
  • Grazing Angles
  • Integrals
  • Mathematics
  • Numbers
  • Physics
  • Reflection
  • Seabed
  • Square Roots
  • Sun
  • Transfer Functions
  • Universities
  • Waves

Readers

  • Acoustical Oceanography.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Theoretical Analysis.