A Continuous G/T Measurement Technique for Satellite Broadcasting Receivers

Weather conditions affect the performance of satellite broadcasting receiving antennas. Snow accretion on antennas degrades G/T seriously because it reduces a received signal power and also can increase an antenna noise. We need to establish a continuous G/T measurement technique to evaluate the effect of the weather conditions to the satellite broadcasting receivers. This paper presents the continuous measurement of G/T for the satellite broadcasting receivers. We describe details of the measurement method. We need to obtain a noise level in the satellite broadcasting channel. We propose to estimate the noise level from the values at the outside of the channel. Then, we show measurement results of the G/T values under snowy and rainy weather conditions. We discuss the weather effects on each receiver.