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Abstract
A method for the prediction of the slant path rain attenuation statistics is proposed, based on the Weibull distribution for the representation of the point rainfall rate statistics. The inhomogeneity of the rainfall medium is described by means of the spatial autocorrelation function. Numerical results 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 Radio Consultative Committee and some useful conclusions are deduced. More particularly, the present method has been found to give improved results for the higher percentages of time. On the other hand, the CCIR method is superior for the lowest levels (0.003% and 0.001%) .