Blaunstein N.  

Modeling of land-satellite communication links based on unified stochastic approach

This paper presents a unified self-consistent physical-statistical model for predicting fading phenomena and path loss usually occurred in land-satellite communication links caused by influence of the terrain features on radio signal propagation from the ground-based to the satellite antennas. This approach combines (1) the statistical description of the buildings array located on the rough terrain and the buildings overlay profile, based on special probabilistic distributions of built-up terrain parameters, and (2) the theoretical description of propagation phenomena, taking into account multiple scattering, reflection and diffraction mechanisms. A new 3-D simulation code is presented for predicting the probability of fading phenomena occurring in land-satellite links using the so-called stochastic multi-parametric mode, and we show how to predict fade margin for future link-budget prediction in the performance of satellite mega-cell networks. Results of theoretical predictions are compared with classical physical-statistical (Saunders-Evans) model and with experimental data obtained for different European cities.