Accession Number : ADD005346

Title :   Means for Determining the Refractive Index Profile of the Atmosphere.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hitney,Herbert B

Report Date : 06 Jun 1978

Pagination or Media Count : 6

Abstract : In a method for inferring the refractive index profile of the lower atmosphere a signal pattern comprising interference nulls is observed by receiving a signal from a satellite transmitter over a period of time. Hypothetical signal patterns are successively calculated by hypothesizing the validity of different refractive index profiles and compared with the observed signal pattern until one of them matches the observed signal pattern to within a selected limit of error. (Author)

Descriptors :   *Patents, *Atmospheric refraction, *Refractive index, Radio transmission, Determination, Radiation patterns, Radio signals, Passive systems

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE