Title: Role of earth bulge on the prediction of radio propagation path loss over irregular terrain

Authors: Yashu Shanker; D.K. Lobiyal

Addresses: School of Computer & Systems Science, Jawaharlal Nehru University, New Delhi, India ' School of Computer & Systems Science, Jawaharlal Nehru University, New Delhi, India

Abstract: In this paper, we propose a new approach for the prediction of path loss for mobile radio waves over irregular terrain scenario based on the impact of earth bulge under different weather conditions. Earth bulge represents the circular segment or the curvature of the earth. As the weather changes, the value of earth bulge also varies. Different values of earth bulge are used according to the weather conditions from normal to worst. These values of earth bulge are used to compute actual distance in terms of geometric distance to the radio horizon between the transmitting and receiving points. The path loss is computed for this actual distance using two-ray ground reflection model. The results obtained for the path loss over actual distance for different weather conditions is compared with the corresponding path loss measurement data available for the existing terrain scenarios. The comparative results show the better agreement of the path loss measurement for the given scenarios with the path loss obtained under normal condition than the path loss obtained under other conditions. Also, data analysis from the comparative results shows that the mean error for normal weather condition is smaller than the mean error for other conditions.

Keywords: radio horizon; irregular terrain modelling; path loss; earth bulge; two-ray ground reflection model; radio propagation.

DOI: 10.1504/IJWMC.2020.108535

International Journal of Wireless and Mobile Computing, 2020 Vol.18 No.4, pp.352 - 360

Accepted: 16 Dec 2019
Published online: 13 Jul 2020 *

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