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Optimal Rain Attenuation Prediction Models for Earth-Space Communication at Ku-Band in North Central Nigeria

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Proceedings of the 7th International Conference on the Applications of Science and Mathematics 2021

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 273))

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Abstract

Precipitation adversely affects satellite-earth links operating at frequencies ≥ 10 GHz. This paper evaluates five of the best performing rain attenuation models for earth-space links so as to obtain the optimal models for North Central Nigeria. The models considered are ITU-R P.618-9, Bryant, Simple attenuation, Garcia-Lopez and Svjatogor. Also, three elevation angles were considered: 55° (the look angle of most satellite receivers over the Atlantic Ocean Region (AOR) in Nigeria), 23° (the look angle of receivers over the Indian Ocean Region (IOR)) and 42.5° (the look angle of Nigeria’s communication satellite (NIGCOMSAT-1R) over the AOR). 2–4 years of 5-min integration time rainfall data was obtained from the Centre for atmospheric research (CAR), Anyigba, Nigeria. The cumulative distribution of rain attenuation at Ku-band was predicted for circularly polarised signals at different percentages of time of the year. Results obtained showed that the ITU-R P.618, Garcia-Lopez and Bryant models performed optimally in this region with attenuation values ranging from 6 to 19 dB at exceedance time percentage of 0.01% in all the stations.

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Acknowledgements

The author appreciates the Centre for atmospheric research, Anyigba, Nigeria for providing the rainfall measuring equipment used in this research.

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Authors and Affiliations

  1. Department of Physics, Federal University of Technology, Niger State, Minna, Nigeria

    K. C. Igwe

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  1. K. C. Igwe
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Correspondence to K. C. Igwe .

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Editors and Affiliations

  1. Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

    Aida Binti Mustapha

  2. Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

    Suhadir Shamsuddin

  3. Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

    Syed Zuhaib Haider Rizvi

  4. Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

    Saliza Binti Asman

  5. Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

    Siti Suhana Jamaian

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Igwe, K.C. (2022). Optimal Rain Attenuation Prediction Models for Earth-Space Communication at Ku-Band in North Central Nigeria. In: Mustapha, A.B., Shamsuddin, S., Zuhaib Haider Rizvi, S., Asman, S.B., Jamaian, S.S. (eds) Proceedings of the 7th International Conference on the Applications of Science and Mathematics 2021. Springer Proceedings in Physics, vol 273. Springer, Singapore. https://doi.org/10.1007/978-981-16-8903-1_36

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