Monthly variability of radiowave propagation effects on satellite link operating at 20 GHz
Satellite communication networks are normally designed to deliver services also under severe propagation conditions. Links operating at 20 GHz can be severely affected by a number of atmospheric effects, where hydrometeor precipitation is often among the most severe ones.
A satellite link is dimensioned with sufficient margin to withstand propagation effects such as some attenuation, for example in term of a signal level threshold for a high percentage of an average year.
The task of interest is to better understand how the propagation induced effects vary per month over the year. This may allow service level agreements for different periods that are shorter than one year, such as the summer months. Currently the internationally agreed methods provide prediction for an average year and for worst month, but not for individual months or a period for some consecutive months shorter than a year.
By using measurement results from data collected in Norway the monthly statistics shall be derived. The results shall be compared with similar measured or modelled results from the literature, if available.
The goal is to derive an estimate for one month or a few consecutive months of measured attenuation exceeding the link margin. Also scintillation effects and channel dynamics is of interest.