The Effect of Atmosphere on Earth-Space Radiowave Propagation Studies of Tropical Satellite Communication in Nigeria


Among other atmospheric region, ionosphere, which is the ionized region of the atmosphere, is considered to impose serious limitation on radio wave transmission while the effect of other layers, more especially, the troposphere is often treated as negligible. At higher frequency, radio waves pass through the ionosphere and are attenuated due to the free electrons present in it. However, recent studies have shown that while the ionospheric disturbances can be predicted on a global scale, tropospheric disturbances depend on geographic location due to dependence of local meteorology on surface topography and other specific location weather forcing. A number of models has been used by many researchers in the investigating of atmospheric attenuation. The objective of this thesis is to discuss the atmospheric effects on high frequency radio waves between 10 and 50 GHz propagating on earth-space in the troposphere for 12 locations in Nigeria, investigating the attenuation and losses it may come across like attenuation due to atmospheric gases, rain, clouds and tropospheric scintillation and comparing them with the model used by the researchers. Two standard elevations angle of and were used in the computation of the propagation impairment for the 12 location

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