Accession Number : AD0757498

Title :   Ionospheric Research Using Satellites.

Descriptive Note : Final scientific rept. 1 Feb 69-31 Dec 71,

Corporate Author : NATIONAL COMMITTEE FOR SPACE RESEARCH HAIFA (ISRAEL) RADIO OBSERVATORY

Personal Author(s) : Mass,Jonathan ; Keroub,Israel ; Shuval,Abraham

Report Date : FEB 1972

Pagination or Media Count : 70

Abstract : The report completes two Annual Scientific Reports (1969, 1970) on the study of the ionosphere using satellites. The ray tracing program used to study ionospheric effects on satellite signals is described in some detail and examples given. The accuracy of graphical methods usually used was found to be better than 7% in a difficult case and the results were not very sensitive to the medium altitude used. A method to detect the satellite's spin for the correction of Faraday data was developed. It is based on accurately determining the changes in the polarization parameters, using the Poincare sphere concept. The contribution of the TEC (Total Electron Content) and its gradients to errors in a satellite navigation system (NNSS) were determined. These depend on the geometry of the pass relative to the station. Computed results are shown graphically and the results are interpreted. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, RADIO WAVES), NAVIGATION SATELLITES, RADIO TRANSMISSION, HIGH FREQUENCY, POLARIZATION, ROTATION, ELECTRON DENSITY, ERRORS, ISRAEL

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE