Characteristics of Rain Attenuation Parameter for Satellite Communications at 12.25GHz

Rain attenuation is highly influenced by rainfall intensity and it varies over time and space. Many countries have made efforts to develop their own rain attenuation prediction models which are fit for their rain environment. In this study the slant path length adjustment factor and rain height proposed in Korea and Japan was applied to ITU-R model (P.618-5, P.618-8), which is most widely used in the world. Their results were compared to measured data of rain attenuation and their effectiveness and validity were examined through evaluating the slant path length adjustment factor and the rain height.