Scintillation and simultaneous rain attenuation at 12.5 GHz to satellite Olympus

This paper reports the statistical relationship between 1‐s averaged rain attenuation (A, in decibels) and standard deviation (σ, in decibels) of simultaneous tropospheric scintillation in 1‐s intervals, derived from high‐resolution (50 samples/s) experimental 12.5‐GHz attenuation time series recorded at Spino d'Adda (45.4°N) in a 30.6° slant path to satellite Olympus during an observation time of approximately 1 year. The statistical relationship can be fitted by the power law σ=0.068A5/12 derivable from a thin turbulent layer model. A similar relationship was also previously obtained in the same slant path at 19.77 GHz. As a consequence, we have concluded that at least up to 20 GHz, the modeling is independent of frequency.