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Akinwumi, S. A. and Omotosho, T. V. and Usikalu, M.R. and Ometan, Oluwafunmilayo O. and Adewusi, M. O. and Adagunodo, T. A. (2018) STUDY OF OXYGEN AND WATER VAPOUR ATTENUATION IN WEST AFRICA. Inteciencia Journal, 43 (1). pp. 180-191. ISSN 0378-1844

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Atmospheric gases such as Oxygen and water vapour attenuation has become a major concern on earth-space path at higher frequencies both uplink and down link at 0.01% unavailability of an average year. Moreover, few studies of non-rainy attenuation have been reported and the statistical analysis is still not clear most especially in West Africa. The meteorological data used in this study is obtained from Atmospheric Infrared Sounder (AIRS) satellites between 2002 and 2009, while the International Telecommunication Union Radio Propagation Recommendation (ITU-RP 676) model is used to validate and estimate gaseous attenuation for West Africa. The results show on contour map that total atmospheric absorption signal fade attenuation values at C band is between 0.015 to 0.09 dB, Ku band is 0.04 to 0.9 dB, Ka band is 0.04 to 1.4 dB and V band is 0.2 to 3.2 dB respectively for both uplink and downlink frequencies. The results also show consistent increase in attenuation due to gases are higher in the western region than in the southern part of West Africa.

Item Type: Article
Uncontrolled Keywords: Attenuation, Satellite communication, Atmospheric gases, Impairment
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 03 May 2018 10:34
Last Modified: 03 May 2018 10:34

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