Ka band Scintillation Results: Meteorological Dependencies and Modelling

The paper presents results of one year ka-band scintillation measurements at a new site, Aveiro, Portugal. A co-located meteorological station made available concurrent measurements of ambient temperature, relative humidity and wind velocity. The available has been investigated from the point of view of long term modeling, meteorological dependence of scintillation parameters and parameters distributions. Results on the long term correlation between scintillation intensity and wind speed, temperature and refractive index are presented. The most interesting are those concerning long term correlation in a day hour mean basis extended over all year. It seems that there is good correlation with some parameter pointing to turbulence mechanisms that are strongly hour dependent. One interesting aspect is also a hysteresis in the daily intensity and wind velocity that is discussed together with some possible explanations and further data analysis needs to access the reasons. Also some results of fades, enhancements and scintillation intensity distributions are presented. With those results was possible to verify that exists a small difference between fades and enhancements.