Accession Number : AD0694411

Title :   PROPAGATION OF CENTIMETER, MILLIMETER, AND SUB-MILLIMETER WAVES IN THE EARTH'S ATMOSPHERE,

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

Personal Author(s) : Zhevakin,S. A. ; Naumov,A. P.

Report Date : 24 SEP 1969

Pagination or Media Count : 51

Abstract : The article reviews the present state of knowledge concerning the propagation of microwaves in the earth's atmosphere. The effect of water vapor dimers and monomers as well as molecular oxygen are examined as they contribute to the total absorption coefficient. Three forms of the spectral lines are contrasted, namely that proposed by Lorentz, that proposed by Van Vleck and Weiskopf, and the form obtained from a solution of the kinetic equation. Natural atmospheric wave-guides are discussed briefly indicating why it is impractical to use them for communications. (Author)

Descriptors :   (*RADIO TRANSMISSION, MICROWAVES), (*MICROWAVES, *PROPAGATION), MILLIMETER WAVES, SUBMILLIMETER WAVES, ATMOSPHERIC REFRACTION, REFRACTIVE INDEX, ABSORPTION, WATER VAPOR, ATMOSPHERES, USSR

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE