Characterization of Fade Depth Due to Multipath Propagation at Microwave Band

M. E. Sanyaolu, I. E. Ndubuisi, Popoola F. A. and S. I. Owoyemi
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M. E. Sanyaolu: Department of Physical Sciences, Redeemer’s University, Ede, Osun State, Nigeria
I. E. Ndubuisi: Department of Physical Sciences, Redeemer’s University, Ede, Osun State, Nigeria
Popoola F. A.: Department of Mathematical and Physical Sciences, Glorious Vision University, Ogwa, Edo State, Nigeria
S. I. Owoyemi: Department of Integrated Science, Adeyemi Federal University of Education, Ondo, Ondo State, Nigeria

International Journal of Research and Innovation in Applied Science, 2024, vol. 9, issue 1, 14-25

Abstract: The incidence of multipath fading in two Nigerian cities is explored in this study utilising the geoclimatic factor technique and ITUR Recommendation P530-14. Nigerian cities Abuja and Yola are being considered for the study. Two years (2019- 2020) of radiosonde data obtained from the Nigerian Meteorological Agency (NIMET) are used. The estimation of the amount of time a certain fade depth is underestimated was presented which leads to outage probability due to atmospheric multipath propagation, assuming the given fade depth leads to the received signal falling below the squelch level. The Inverse Distance Square (IDS) approach was utilized for calculating point refractivity gradients that were not exceeded for 1% of the time at 65 m above the ground for the selected two cities in Nigeria. The findings reveal that the point refractivity gradient and the geoclimatic component vary on a monthly, seasonal, and annual basis. It is also seen that the fade depth revealed that the maximum risk of duct occurrence is much higher in Abuja compared to Yola.

Date: 2024
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