Two-way solution of underwater sound propagation problem in two and three-dimensional environment by pseudodifferential parabolic equation technique

Author

Aviloff, C.V.

Author_Institution

N.N. Andreev Acoustics Inst., Acad. of Sci., Moscow, Russia

Volume

3

fYear

1994

fDate

13-16 Sep 1994

Abstract

The paper presents some recipes for underwater sound calculations in 2D and 3D ocean models with sound speed and density slowly varying with horizontal coordinates and arbitrary in depth including a nonhomogeneous liquid model of bottom. These recipes are based on the idea of WKB-like factoring and the extensive use of high order Pade approximations for numerical solving of arising pseudodifferential equations. The author starts from the essentially 2D problem of acoustical wave propagation in a three-dimensional liquid waveguide translationally invariable on the y cartesian coordinate without currents

Keywords

acoustic wave propagation; acoustic waveguides; differential equations; oceanography; parabolic equations; underwater sound; WKB-like factoring; acoustical wave propagation; density; high order Pade approximations; nonhomogeneous liquid mode; pseudodifferential parabolic equation technique; sound speed; three-dimensional environment; three-dimensional liquid waveguide; two-dimensional environment; two-way solution; underwater sound calculations; underwater sound propagation problem; Acoustic propagation; Acoustic waveguides; Equations; Gaussian processes; Liquid waveguides; Material properties; Nonhomogeneous media; Oceans; Underwater acoustics; Waveguide components;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings

Conference_Location

Brest

Print_ISBN

0-7803-2056-5

Type

conf

DOI

10.1109/OCEANS.1994.364189

Filename

364189