Comparison of Tropospheric Scintillation Prediction Models of Libyan Climate

Abstract

Tropospheric scintillation is a phenomenon that will cause signal degradation in satellite communication with low fade margin. In the field of satellite communications, the lower atmosphere meteorological condition influences the propagation of radio waves. This work concentrates on those aspects in Libyan regions, based on a sixty-year of temperature and humidity data that taken from LIBYAN NATIONAL METEOROLOGICAL CENTER from 1945 to 2007. The study is divided into two parts; firstly is present the main features of the characteristic of tropospheric scintillation. Then study relationships between scintillation and elevation angle with local temperature and humidity for Libyan cities. Secondly, this study focuses on discussed and compared scintillation prediction models. From the results, it is concluded that the scintillation becomes significant when using a very high frequency and a low elevation angle. In addition, the result indicates that the scintillation amplitude is higher in the summer compared to other seasons.