Accession Number : ADA184829

Title :   Path-Integral Treatment of Intensity Behavior for Rays in a Sound Channel,

Corporate Author : CALIFORNIA UNIV SANTA CRUZ DEPT OF PHYSICS

Personal Author(s) : Flatte, Stanley M ; Reynolds, Stephen A ; Dashen, Roger

PDF Url : ADA184829

Report Date : Sep 1986

Pagination or Media Count : 18

Abstract : The intensity coherence function (ICF) of the acoustic wave function from a point source is derived by the path-integral technique for transmission through internal waves in the presence of a sound channel. Separations in time are emphasized, although separations in transverse horizontal position, vertical position, and acoustic frequency are discussed. Approximate intensity coherence times, lengths, and bandwidths due to internal-wave fluctuations are derived. Analytic approximations suitable for computer coding are presented for the micropath focussing parameter gamma, which controls the deviation of higher intensity moments from the Rayleigh-distribution values.

Descriptors :   *SOUND, *CHANNELS, *ACOUSTIC WAVES, INTENSITY, COMPUTERIZED SIMULATION, PATHS, INTEGRALS, FREQUENCY, BANDWIDTH, APPROXIMATION, FOCUSING, COHERENCE

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE