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Variation of slant path Ka/V-band rain attenuation over seven tropical locations in Nigeria using synthetic storm techniques

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Abstract

In this paper, rain characteristics and slant path rain attenuation at 30 and 40 GHz using synthetic storm techniques over seven tropical locations in Nigeria have been presented. The technique can be used to predict the local first-order statistical rain attenuation to mitigate the severe fade experienced at higher frequency bands by employing local rainfall rate statistics. Three years rain rate data at seven tropical and equatorial locations in Nigeria were utilized for the purpose of this work. The predicted statistics are in good agreement with those obtained from the propagation beacon measurement (EUTELSAT W4/W7 satellite-12.245 GHz) It could be observed that at 99.99 % link availability over these locations, the fade margin of higher dB (74 and 81 dB) are required at 30 and 40 GHz frequency bands, respectively. When diurnal variation was observed for four time intervals: 00:00–06:00, 06:00–12:00, 12:00–18:00, and 18:00–24:00, there is a variation of the fade margin over the hours of the day. The overall results will be needed for an acceptable planning that can effectively reduce the fade margin to a very low value for an optimum data communication over the studied locations.

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Acknowledgments

The authors acknowledge the Centre for Basic Space Science of NASRDA, Nigeria, for the provision of the wireless weather stations (NECOP equipment) to each of the sites used for this study. The authors are equally grateful to Universiti Kebangsaan Malaysia for granting one of them (ATA) post-doctoral research fellowship through its Centre for Research in Instrumentation and Management (CRIM) under the project code UKM-MI-OUP-2011.

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Authors and Affiliations

  1. Department of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia

    A. T. Adediji, J. S. Mandeep & M. Ismail

  2. Department of Physics, Federal University of Technology Akure, Akure, Nigeria

    J. S. Ojo & A. T. Adediji

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  1. J. S. Ojo
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  2. A. T. Adediji
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  3. J. S. Mandeep
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  4. M. Ismail
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Correspondence to J. S. Mandeep.

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Ojo, J.S., Adediji, A.T., Mandeep, J.S. et al. Variation of slant path Ka/V-band rain attenuation over seven tropical locations in Nigeria using synthetic storm techniques. Theor Appl Climatol 124, 487–496 (2016). https://doi.org/10.1007/s00704-015-1431-0

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