Measurement-based estimates of outage on earth-space RF links from attenuation and depolarization
Abstract
This paper presents estimates of outage rates on 12 and 19 GHz earth-space links due to attenuation and depolarization from rain and ice. These estimates are based on attenuation and depolarization measurements made on an earth-space path. The effects of carrier frequency, path elevation angle, polarization angle at the earth terminal, performance criterion, and modulation technique on outage rate are shown. Crosstalk from depolarization can require a significant increase in the fading margin of an earth-space link over the margin needed due to rain attenuation alone. This increase is minimized by the use of frequency staggering on orthogonal polarizations and the choice of polarization angles near horizontal and vertical.
- Publication:
-
ICC 1982 - The Digital Revolution, Volume 2
- Pub Date:
- 1982
- Bibcode:
- 1982icc.....2....3A
- Keywords:
-
- Depolarization;
- Microwave Attenuation;
- Satellite Transmission;
- Uplinking;
- Atmospheric Attenuation;
- Carrier To Noise Ratios;
- Crosstalk;
- Precipitation (Meteorology);
- Signal Fading Rate;
- Communications and Radar