Volume 2, Issue 3, June 2017, Page: 35-37
Estimation of Clear-Air Atmospheric Effective Earth Radius (K-Factor) in Calabar
Isaac A. Ezenugu, Department of Electrical Engineering, Imo State University (IMSU), Owerri, NigeriaDepartment of Electrical Engineering, Imo State University (IMSU), Owerri, Nigeria
Umoren Ifiok Anthony, Department of Electrical Engineering, Imo State University (IMSU), Owerri, Nigeria
Okon Abasiama Colman, Department of Electrical/Electronic and Computer Engineering, University of Uyo, AkwaIbom, Nigeria
Received: Oct. 16, 2016;       Accepted: Jan. 20, 2017;       Published: Jul. 21, 2017
DOI: 10.11648/j.ijics.20170203.12      View  1334      Downloads  38
Abstract
Microwave radio propagation in terrestrial radio links over the years has earned increased application and there has been renewed attention of studies concerning techniques for estimating the probability of multipath fading distributions. Particularly, the secondary radio parameters remain very important in carrying out these estimations especially the concept of effective earth radius. This study was carried out in Calabar, South-south Nigeria with three years atmospheric parameters data obtained from Nigerian Meteorological Agency (NIMET). International Telecommunication recommendation models were used in obtaining point refractivity gradient with which the effective earth radius factor was determined. The result showed a yearly average value of 1.626091667 for the k-factor and yearly average value of -125.50845 for the point refractivity gradient. There are also monthly and seasonal variations in the two parameters. The highest k-factor of 1.8263 occurred in January whereas the least k-factor of 1.3396 occurred in November.
Keywords
Radio Propagation, Microwave Radio, Refractivity, Multipath Fading, Effective Earth Radius, K-Factor, Point Refractivity Gradient
To cite this article
Isaac A. Ezenugu, Umoren Ifiok Anthony, Okon Abasiama Colman, Estimation of Clear-Air Atmospheric Effective Earth Radius (K-Factor) in Calabar, International Journal of Information and Communication Sciences. Vol. 2, No. 3, 2017, pp. 35-37. doi: 10.11648/j.ijics.20170203.12
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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