Estudo da atenuação devido à chuva para enlaces via satélite em Uberlândia

Abstract

In satellite links, rain attenuation has been the most significant and detrimental effect. This factor increases with the frequency and amount of rainfall. In general, major efforts have been made to measure and model long-term rainfall mitigation statistics to assist in the design of the communication system. Measured data is necessarily restricted to specific locations and link parameter. The data used in this work were obtained by the Department of Geography (Laboratory of Climatology and Water Resources) and the National Institute of Meteorology (INMET), during the last 5 years, in the city of Uberlandia. For this, two models of rain attenuation that had good performance were used: the CCIR model and Crane model. Depending on the intensity of rainfall in the city, it is possible to calculate the signal attenuation by the existing models, obtaining the statistics and the probabilities of occurrence in satellite as well as terrestrial link