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Interference between an earth station of a communication-satellite system and the stations of terrestrial line-of-sight radio-relay systems

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1 Author(s)
Chamberlain, J.K. ; General Electric Co. Ltd., Telecommunications Research Laboratories, Hirst Research Centre, Wembley, UK

The paper gives a simple method of estimating the mutual interference that may arise between an earth station of a communication-satellite system and neighbouring line-of-sight radio-relay stations using the same frequency band, and suggests criteria for deciding whether a proposed mode of earth-station operation is compatible with the maximum permissible values of telephone-channel interference noise recommended by the CCIR. The effect on the interference of the motion of the earth-station aerial is considered in some detail for the principal types of orbit that the satellites being tracked might occupy. A number of examples are included to illustrate the application of the method to an earth station handling high-capacity f.d.m./f.m. transmissions in the 4Gc/s and 6Gc/s communication bands.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:112 ,  Issue: 2 )