Accession Number : AD0834946

Title :   A TECHNIQUE FOR DERIVING VERTICAL IONOSPHERIC PROFILES FROM OBLIQUE SOUNDINGS.

Descriptive Note : Final rept.,

Corporate Author : ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY

Personal Author(s) : Mather, Robert A. ; Schneible, Richard A. ; Wilson, Frederick C.

Report Date : MAY 1968

Pagination or Media Count : 40

Abstract : Utilization of high frequencies for over-the-horizon surveillance necessitated a refined approach to the determination of actual ray paths. Various ray tracing programs have been developed. The basic problem lies in accurately determining the values of the appropriate ionospheric parameters. This report develops the concept that the spacial distribution of electron density along a given path may be inferred from oblique incidence soundings taken at the terminals of the path. To derive appropriate relationship between required data and that available from oblique sounders, it was necessary to determine the effect of variations of the electron density distribution on the principle features of the oblique ionograms. To accomplish this an analog computer was programmed to solve the Hazelgrove equations for ray paths between any two prescribed terminal points. (Author)

Descriptors :   (*ATMOSPHERIC SOUNDING, ELECTRON DENSITY), HIGH FREQUENCY, ACCURACY, DISTRIBUTION, IONOSPHERE, MATHEMATICAL ANALYSIS, IONOSPHERIC PROPAGATION, COMPUTER PROGRAMS, MATHEMATICAL MODELS.

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE