Frequency Scaling of Rain Attenuation at Ka band over Tropical Hill Station, Shillong

Present day satellite communication system application offering 100GB/s throughput and using very small-scale aperture terminal (VSAT), mostly uses the frequency band above 10 GHz. These frequency band is very susceptible to fading or link outage due to rain induced climatic challenge. However, the experimental arrangement at these frequencies may not be available for attenuation estimation and only option to adapt some scaling technique to scale the available measurements to that frequency. This work compares the available method over tropical locations along with conventional ITU-R method of frequency scaling and investigates the attenuation at higher frequency on the basis of worst month data of rain rate and rain attenuation over the hilly tropical location, Shillong.