Accession Number : AD0712335

Title :   CORRELATION OF AMPLITUDE AND PHASE SPATIAL FLUCTUATIONS OF WAVE DIFFRACTED ON ROUGH SCREEN (Korrelyatsiya Prostranstvennykh Fluktuatsii Amplitudy i Fazy Volny, Difragirovannoi na Nerovnom Ekrane),

Corporate Author : ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER WASHINGTON D C

Personal Author(s) : Polishchuk,Yuri M.

Report Date : 01 SEP 1970

Pagination or Media Count : 19

Abstract : Autocorrelation of fluctuations, as well as the mutual amplitude and phase correlation in a diffracted wave, are examined. The problem is solved in approximation of the small perturbations method for all values of the wave parameter. It is shown that correlation in the Fraunhofer and ray approximation zones does not depend on the mean height of the screen, and increases as the distance between the receivers and the screen increases. Amplitude and phase correlation at the Point of reception diminishes and vanishes in the Fraunhofer zone with increasing distance between the receiving point and the screen. In the range of intermediate values of the wave parameter, correlation is determined by the ratio between the mean scale of irregularities and the radius of the Frennel zone in the region of the screen and depends on the mean height of the screen. (Author)

Descriptors :   (*ELECTROMAGNETIC RADIATION, DIFFRACTION), STATISTICAL FUNCTIONS, PHASE STUDIES, AMPLITUDE MODULATION, USSR

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE