Accession Number:

AD0263267

Title:

DETERMINATION OF IONOSPHERE PARAMETERS BY MEANS OF A SATELLITE ANTENNA-TYPE PROBE. III. PERTURBATION ANALYSIS AND ADMITTANCE MEASUREMENT SYSTEM

Descriptive Note:

Corporate Author:

ELECTROMAGNETIC RESEARCH CORP COLLEGE PARK MD

Personal Author(s):

Report Date:

1961-06-30

Pagination or Media Count:

1.0

Abstract:

A spherical antenna-type probe was analyzed for use in determining the parameters of the ionosphere by means of the reaction of the medium on the antenna admittance. The effect of theANISOTROPY OF THE MEDIUM WHICH IS PRODUCED BY THE EARTHS MAGNETIC FIELD IS EVALUATED BY A PERTURBATION TECHNIQUE. This is accomplished by separating the the conductivity tensor into a scalar plus an anisotropic part, both of which depend on the terrestrial magnetic field. The integral equation which results from a Greens function solution is approximated by the isotropic Greens function. With this approximation, it is possible to carry out all the necessary integrations to obtain the field components. The input admittance then can be evaluated in terms of known functions. A system proposed for the measurement of input admittance was refined by the application of single sideband modulation techniques. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE