Spatial Correlation Analysis of Rainfall Rates for Advanced Attenuation Mitigation Technologies

Spatial correlation property of rainfall rate in all over Japan is analysed by using data produced from Japanese Meteorological Agency called AMeDAS system. This property will become very useful for evaluating future powerful rain-induced attenuation mitigation methods such as multi-site site-diversity and adaptive transmit power control from HAPS or satellite. Several dependences of spatial correlation, such as distance, seasonal, integration-time and directional dependences are shown. In some area we find anisotropic feature of correlation property. Some examples of utilization of this spatial correlation property for evaluating some attenuation countermeasure methods are introduced.