Ultimate Subjective Quality of a Satellite Television Network Covering Europe and Africa

The distribution of television programs over Europe and Africa via a geostationary satellite is considered on the basis of the satellite-earth liaison. The subjective quality of the image to be expected on the domestic TV receiver is expressed in terms of the ground antenna diameter for values of the satellite output power ranging from 10 to 100 watts, for different values of the RF bandwidth and several locations of the ground terminals in Europe, Africa, and the Middle East. The modulation technique used is the standard FM and the values considered for the carrier frequency are 4, 8, and 12 GHz. The effect of the dimensions of the ground receiving antenna on the subjective quality is given graphically for black-and-white and color television systems in both high and low field strengths relative to the local distribution station.