Usikalu, M.R. ATMOSPHERIC GASES ATTENUATION IN WEST AFRICA. Radio and Antenna Days of the Indian Ocean (RADIO).
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Abstract
Atmospheric gases variations were evaluated to have major effect on Ku-band and above at 0.01 % unavailability of an average year on both uplink and down link. The International Telecommunication Union Radio Propagation Recommendation (ITU-RP 676, 2012) data bank was used for the computation of gaseous attenuation for West Africa. Monthly and yearly mean of temperature, pressure and relative humidity were used as input parameters obtained from ITU-R study group 3 data base. The results presented on contour map show that total atmospheric absorption signal fade attenuation values at C, Ku, Ka and V bands is between 0.015 to 0.09 dB, 0.04 to 0.9 dB, 0.04 to 1.4 dB and 0.2 to 3.2 dB respectively for both uplink and downlink frequencies. Generally, consistent signal absorption due to Oxygen and water vapour are higher in the western region than southern part of West Africa.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | UNSPECIFIED |
| Depositing User: | Dr. Mojisola Usikalu |
| Date Deposited: | 22 Aug 2017 13:56 |
| Last Modified: | 22 Aug 2017 13:56 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/8624 |
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