[1] The different rain attenuation prediction models proposed by different authors on terrestrial paths are studied in this paper. Subsequently, for paths not exceeding 22 km, the rain attenuation exceeded for 0.01% of the time for these four geographical locations is estimated for South Africa using the ITU-R Model, the Crane Global model, and the Moupfouma model, at different frequencies. Finally, the predicted attenuation values are compared on a monthly basis, as well with the measured upper and lower attenuation bounds for a 6.73-km line-of-sight link operating at 19.5 GHz in Durban.Citation: Fashuyi, M. O., and T. J. Afullo (2007), Rain attenuation prediction and modeling for line-of-sight links on terrestrial paths in South Africa, Radio Sci., 42, RS5006,
The cumulative distributions of rain intensity for 12 locations in South Afi'ica arc presented in this paper based on 5-year rainfall data. The rainl~I11 rate having an integration time of 60 minutes is converted to the ITU-R recommended integration time of I minute for Durban in South Africa.Consequently, values of coeflieients a and b so determined arc used to convert 60-minute into 1minute rain rates 1'01' other regions or South Arrica. The resulting cumulative rain intensities arc compared with the l'CIevant ITU-R Recommendation PX37. Based on this, an additional three rain zones arc determined alongside the live ITU-R I'ain zones Illr South Africa.
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