Problems with mobile satellite communications
Abstract
Three aspects of satellite communication with mobile ground stations are examined: satellite transmission efficiency, suitable equipment for mobile units, and transmission media characteristics. Possibilities for large geostationary satellite structures, e.g., the Public Service Platform, a multibeam antenna, are considered. The equipment for the German experimental ship terminal is described. Transmission measurement results (1.5 GHz) at low elevation angles are emphasized. Atmospheric influences, multipath effects, and signal fading are analyzed for transmissions via ATS-6 and MARISAT satellites.
- Publication:
-
On Radio Frequencies in Aerospace (ESA-TT-704)
- Pub Date:
- December 1981
- Bibcode:
- 1981orfa.rept...58O
- Keywords:
-
- Communication Equipment;
- Ground Stations;
- Portable Equipment;
- Satellite Transmission;
- Atmospheric Scattering;
- Ats 6;
- Communication Satellites;
- Marisat Satellites;
- Multipath Transmission;
- Satellite Communication;
- Signal Fading;
- Transmission Efficiency;
- Communications and Radar