Accession Number:

ADA318848

Title:

Finite Difference Modelling of Scattering by Objects in the Seabed,

Descriptive Note:

Corporate Author:

SACLANT UNDERSEA RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s):

Report Date:

1996-07-01

Pagination or Media Count:

45.0

Abstract:

In this report we describe the theory and some implementation issues of a finite difference code used at SACLANT Centre. In particular, we consider the modelling of attenuation and the excitation of a remote incident field by using Huygens sources. A series of comparisons of finite difference results with analytical results is performed. The report concludes with a series of computations of scattering of a generalized plane wave from a buried cylinder where the transmitted portion of the generalized plane wave is evanescent. An example of time-reversed propagation of a scattered field is also given.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE