Interference to satellite earth stations due to scatter of terrestrial transmissions by aircraft
Abstract
For an earth station antenna diameter of 13 m, the pulse duration is from 60 to 90 ms. A study to assess the likelihood of interference to a television receive-only earth station at a typical commercial site in the Northern Sydney suburbs reveals that burst levels of interference much greater than the thermal noise will occur as a consequence of several 4-GHz Telecom radio-relay transmitters. The interference outage time will be a function of the precise siting of the earth station. Calculations for locations near a minor commercial aircraft route and near a reporting point for general aviation give interference times of 0.13 min/yr and 0.05 min/yr, respectively. It is concluded that interference to earth stations from aircraft scatter should not, therefore, pose a problem unless the earth station antenna main beam intersects a final approach path of a major airport.
- Publication:
-
ATR Australian Telecommunication Research
- Pub Date:
- 1983
- Bibcode:
- 1983ATR....17...25M
- Keywords:
-
- Commercial Aircraft;
- Electromagnetic Interference;
- Ground Stations;
- Microwave Scattering;
- Satellite Television;
- Television Receivers;
- Atmospheric Scattering;
- Carrier To Noise Ratios;
- Radio Relay Systems;
- Satellite Transmission;
- Television Transmission;
- Transmission Efficiency;
- Communications and Radar