Tropospheric Scintillation and Simultaneous Rain Attenuation at 19.7 GHz and 39.4 GHz for Tito Scalo and Spino d’Adda

Beacon power levels measured in 2015 in the framework of the Alphasat Aldo Paraboni propagation experiment at the two receiving stations in Tito Scalo and Spino d’Adda, for beacon frequencies of 19.7 GHz and 39.4 GHz, are calibrated to extract total attenuation timeseries. These timeseries are then used to perform an analysis on scintillations during rain events. The analysis shows that there is some deviation (23% and 38% at Ka band and Q band, respectively) in the slope of the power law fitted to the data, with respect to the slope of the power law provided in the thin layer model. Furthermore, it was found that the scintillation intensity ratio at Spino d’Adda and Tito Scalo are 22.2% and 21.1% smaller, respectively, than the theoretical one.