A global method for the prediction of the slant path rain attenuation statistics

A method for the prediction of the slant path rain attenuation statistics i s proposed, based on the Weibull distribution for the representation of the point rainfall rate statistics. The inhomogeneity of the rainfall medium i s described by means of the spatial autocorrelation function. Numerical res ults derived by using the proposed model have been compared with available experimental data taken from the most recent ITU-R database. Comparison is also made with another prediction method recommended by the International R adio Consultative Committee and some useful conclusions are deduced. More p articularly, the present method has been found to give improved results for the higher percentages of time. On the other hand, the CCIR method is supe rior for the lowest levels (0.003% and 0.001%).