Evaluation of the Effect of Radius of Curvature on the Rounded Edge Diffraction Loss Computed by Hacking Method for a Plateau
American Journal of Software Engineering and Applications
Volume 6, Issue 2, April 2017, Pages: 49-55
Received: Jan. 8, 2017; Accepted: Jan. 18, 2017; Published: Jun. 12, 2017
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Authors
Swinton C. Nwokonko, Department of Electrical Engineering, Imo State University (IMSU), Owerri, Nigeria
Ikechukwu H. Ezeh, Department of Electrical Engineering, Imo State University (IMSU), Owerri, Nigeria
Vital K. Onwuzuruike, Department of Electrical Engineering, Imo State University (IMSU), Owerri, Nigeria
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Abstract
In this paper, the effect of the radius of curvature on the diffraction loss of rounded edge obstruction is presented. The study is conducted for C-band microwave link with a plateau in its path. The plateau has flat to that spans about 1922 m. Two different approaches are used to determine the radius of curvature of the rounded edged fitted to the plateau top. Among the two methods employed, the ITU-R 526-13 method overestimated the radius (about 12,374,693.37 m) as against 59,031.42 m estimated by the second method at the same C-band frequency of 4 GHz. Also, high radius of curvature by the ITU-R 526-13 method gave very high diffraction loss value for the plateau. Furthermore, with the ITU-R 526-13 method, the radius of curvature does increase with increase in frequency. In all, the results indicate that the ITU-R 526-13 method is not particularly suitable for estimating the radius of curvature for the rounded edge when applied to a plateau. In addition, a more accurate method is required to estimate the radius of curvature for computing rounded edge diffraction loss.
Keywords
Rounded Edge Diffraction, Diffraction Loss, Elevation Profile, Diffraction Parameter, Knife Edge Diffraction, Hacking Rounded Edge Diffraction Method
To cite this article
Swinton C. Nwokonko, Ikechukwu H. Ezeh, Vital K. Onwuzuruike, Evaluation of the Effect of Radius of Curvature on the Rounded Edge Diffraction Loss Computed by Hacking Method for a Plateau, American Journal of Software Engineering and Applications. Vol. 6, No. 2, 2017, pp. 49-55. doi: 10.11648/j.ajsea.20170602.17
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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