Accession Number : ADA310283

Title :   Progress Report for 1 January - 30 June 1996.

Corporate Author : CATHOLIC UNIV OF AMERICA WASHINGTON DC DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Beran, M. J.

PDF Url : ADA310283

Report Date : 30 JUN 1996

Pagination or Media Count : 4

Abstract : Methods of solution were considered for solving the generalized coherence function when there is a general bottom impedance condition. In this case the equation contains a diffusion term. Three types of solution were considered: (1) a multi-scale solution, (2) a quasi-equilibrium solution and (3) a numerical marching procedure. Work on the numerical solution has begun using a simplified Gaussian form for the index-of- refraction fluctuation correlation function. In addition the bottom impedance condition has been compared with a formulation which includes a water-bottom interface and it is shown that the latter approach can be incorporated in the present formulation.

Descriptors :   *ACOUSTIC SCATTERING, VOLUME, SCATTERING, NUMERICAL ANALYSIS, COHERENCE, VARIATIONS, SURFACES, CORRELATION, SOLUTIONS(GENERAL), REFRACTION, EQUATIONS, IMPEDANCE, BOTTOM, FUNCTIONS(MATHEMATICS).

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE