Measurements of atmospheric emission at 11 GHz in the European region
Abstract
Results of atmospheric attenuation measurements at 11.4 GHz at several locations in Europe are presented. The tests were carried out with a view to determining the best orbital position of the European Communication Satellite. Sites were chosen on the basis of their latitude and climate, and the antenna of the Dicke-type radiometers used was pointed at the probable orbital position. A capacitor rain gage was set up near each radiometer to ascertain whether there is a rough correlation between attenuation and local rainfall. Monthly attenuation statistics are discussed. There is evidence that the highest 0.1% time attenuations depend on the antenna elevation angle and that the ESRO theoretical model, in the absence of statistics for periods longer than those considered, is a fair basis for satellite/ground link calculations.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1974
- Bibcode:
- 1974STIN...7516610G
- Keywords:
-
- Atmospheric Attenuation;
- Communication Satellites;
- European Space Programs;
- Radio Emission;
- Dicke Radiometers;
- Noise Temperature;
- Parabolic Antennas;
- Rain;
- Superhigh Frequencies;
- Space Communications, Spacecraft Communications, Command and Tracking