Accession Number : AD0681176

Title :   WAVE PROPAGATION IN A RANDOM MEDIUM,

Corporate Author : STANFORD UNIV CALIF STANFORD ELECTRONICS LABS

Personal Author(s) : Lee,Robert W. ; Harp,Jeffrey C.

Report Date : JUN 1968

Pagination or Media Count : 109

Abstract : A simple technique has been used to derive statistical characterizations of the perturbations imposed upon a wave (plane, spherical or beamed) propagating through a random medium. The method is essentially physical rather than mathematical, and is probably equivalent to the Rytov method. The limitations of the method are discussed in some detail; in general they are restrictive only for optical paths longer than a few hundred meters, and for paths at the lower microwave frequencies. Situations treated include arbitrary path geometries, finite transmitting and receiving apertures, and anisotropic media. Results include, in addition to the usual statistical quantities, time-lagged functions, mixed functions involving amplitude and phase fluctuations, angle-of-arrival covariances, frequency covariances, and other higher-order quantities. (Author)

Descriptors :   (*WAVE PROPAGATION, *ATMOSPHERES), ELECTROMAGNETIC RADIATION, PROPAGATION, POLARIZATION, ISOTROPISM, ATTENUATION, ATMOSPHERE MODELS, ATMOSPHERIC SOUNDING, STOCHASTIC PROCESSES

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE