Synthesis of Attenuation Time Series based on Synthetic Rain Fields Evolving in Time

This contribution presents achievements in developing a physically-based model for the synthesis of space-time correlated rain attenuation time series at any frequency in the millimetre-wave range. The methodology relies on (and aims at extending) the MultiEXCELL model, which generates realistic rain maps by combining several exponentially-shaped rain cells, of different peak intensity and size, according to the natural aggregative process observed in a large database of rain maps. The time evolution of the rain maps is achieved by considering the structural modification of single rain cells, which occurs according to simple yet powerful analytical expressions, as well as their displacement due to wind. As a result, the model offers the chance to generate realistic synthetic rain maps reflecting both the spatial and temporal correlation of the rain rate, which, in turn, can be used to simulate the interaction of precipitation with wireless systems of any complexity working at frequencies higher than 10 GHz (from single terrestrial/satellite links to more complex systems distributed in space).