Accession Number : ADA289478

Title :   Progress Report for The Catholic University of America Contract N00014-94-1-0201.

Descriptive Note : Progress rept. 1 Nov-31 Dec 94,

Corporate Author : CATHOLIC UNIV OF AMERICA WASHINGTON DC

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

PDF Url : ADA289478

Report Date : 31 DEC 1994

Pagination or Media Count : 5

Abstract : The following topics were studied in detail during the report period: 1) Combined volume and surface scattering in a channel, using a modal formulation. 2) Two-way formulation to account for backscattering in a channel. 3) Data analysis to determine vertical and horizontal correlation lengths of the random index-of-refraction fluctuations in a channel. 4) The effect of random fluctuations on the two-f requency coherence function in a shallow channel. 5) Approximate eigenfunctions and eigenvalues for linear sound-speed profiles. 6) The effect of sea-water absorption on scattering in a shallow channel.

Descriptors :   *ACOUSTIC SCATTERING, DATA PROCESSING, RANDOM VARIABLES, COHERENCE, EIGENVECTORS, EIGENVALUES, BACKSCATTERING, SHALLOW WATER, PROFILES, APPROXIMATION(MATHEMATICS), ACOUSTIC ABSORPTION, SOUND WAVES, NUMERICAL METHODS AND PROCEDURES, CORRELATION TECHNIQUES, UNDERWATER ACOUSTICS, ACOUSTIC VELOCITY, SEA WATER, CHANNELS(WATERWAYS), ACOUSTIC REFRACTION, ACOUTIC FIELDS.

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE