Accession Number : AD0611904

Title :   CORRELATION OF AMPLITUDE AND PHASE FLUCTUATIONS FOR WAVE PROPAGATION IN A MEDIUM WITH RANDOM, SPHEROIDAL INHOMOGENEITIES,

Corporate Author : LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF

Personal Author(s) : Knollman,G. C.

Report Date : 13 JUL 1964

Pagination or Media Count : 5

Abstract : A theoretical study is presented of the mutual correlation between amplitude and phase fluctuations when an acoustic (or electromagnetic) wave propagates in a random medium whose correlation function for refractive index is spheroidal-Gaussian. Amplitudephase correlations are considered for both plane and spherical waves transmitted through a statistically isotropic medium in which the deviations of refractive index about a mean are small. Large-scale inhomogeneities of arbitrary spheroidal shape are treated, and transmitter-to-receiver ranges are taken as large in comparison with the refractive-index correlation length in the transmitter-receiver plane. Comparison is made between the cases of spherical and nonspherical inhomogeneities, for both plane and spherical acoustic waves. The low- and high-frequency extremes of the theory are given special note. (Author)

Descriptors :   (*ELECTROMAGNETIC RADIATION, PROPAGATION), (*SOUND, PROPAGATION), (*CORRELATION TECHNIQUES, PROPAGATION), WAVE PROPAGATION, STATISTICAL FUNCTIONS, TRANSCENDENTAL FUNCTIONS, REFRACTIVE INDEX, AMPLITUDE MODULATION, PHASE MODULATION, PHASE SHIFT CIRCUITS

Distribution Statement : APPROVED FOR PUBLIC RELEASE