Rain attenuation predictions at ku-band in South East Asia countries

The rain attenuation in the 12- GHz band and one- minuterain rate were measured at four satellite beacons located in South East Asia countries over a three- year period ( 2002 - 2004). The cumulative distribution of rain rate obtained as well as cumulative distribution of rain attenuation obtained are presented and compared with the rain prediction models. Most of the rain prediction models showed noticeable deviation to the measured values above the existence of the breakpoint ( the point at which the slope changes). The results can be employed to guide the design and application of slant- path communication systems, especially in South East Asia countries.