COMPUTATION OF RAIN-INDUCED ATTENUATION AT CENTIMETRIC WAVE BAND FOR SLANT PATH COMMUNICATION IN NORTH CENTRAL NIGERIA

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Published: Sep 30, 2024
DOI: https://doi.org/10.22452/mjs.vol43no3.13
Keywords:
Slant path Ka Ku-band rain-induced attenuation north-central Nigeria rainfall rate

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K.C. Igwe
Department of Physics, Federal University of Technology, Minna, Niger State, NIGERIA.
https://orcid.org/0000-0001-5636-002X
O.D. Oyedum
Department of Physics, Federal University of Technology, Minna, Niger State, NIGERIA.
J.S. Ojo
department of Physics, Federal University of Technology, Akure, Ondo State, NIGERIA.
O.O. Obiyemi
Department of Electrical/Electronic Engineering, Osun State University, NIGERIA.
A.G. Ibrahim
Department of Physics, Federal University of Technology, Minna, Niger State, NIGERIA.

Abstract

 In this paper, five globally recognised rain attenuation models for slant path communication are considered in order to compute the amount of attenuation and obtain the optimal rain attenuation models for North Central region of Nigeria. The models are Bryant, Garcia-Lopez, ITU-R P.618-9, Simple Attenuation and Svjatogor. These models were evaluated at Ku and Ka-bands and at three elevation angles of 55o, 42.5o and 23o. 5-minute integration time rainfall data obtained from the Tropospheric Data Acquisition Network (TRODAN), Anyigba, Nigeria was converted to 1-minute integration time using Lavergnat and Gole rain rate model. Predictions were made for circularly polarised signals at different percentages of time of the year. The cumulative distribution of rain attenuation computed showed that attenuation values generally ranged between 9 and 19 dB at time percentage exceedance of 0.01% for the Ku-band, while it ranged between 21 and 41 dB at 0.01% for the Ka-band. Also, computations by the Garcia-Lopez and Bryant models were in agreement with the ITU-R P.618-9 model, while the Simple Attenuation and Svjatogor models underestimated the computed rain attenuation values at every percentage of time in all the stations considered.

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How to Cite
K.C. Igwe, O.D. Oyedum, J.S. Ojo, O.O. Obiyemi, & A.G. Ibrahim. (2024). COMPUTATION OF RAIN-INDUCED ATTENUATION AT CENTIMETRIC WAVE BAND FOR SLANT PATH COMMUNICATION IN NORTH CENTRAL NIGERIA . Malaysian Journal of Science, 43(3), 119–127. https://doi.org/10.22452/mjs.vol43no3.13
Issue
Vol 43 No 3 (2024): September 2024
Section
Original Articles

Licensee MJS, Universiti Malaya, Malaysia. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

References

Abayomi Y.I.O., Khamis N.H.H. (2012). Rain attenuation modelling and mitigation in the tropics: Brief review. Int. J. of Elect. and Comp. Eng., 2(6), 748-757.

Ajewole, M. O. (1997). Scattering and attenuation of centimeter and millimetre radio signals by tropical rainfall. Ph.D thesis, Federal University of Technology, Akure, Nigeria.

Alozie, E., Abdulkarim, A., Abdullahi, I., Usman, A.D., Faruk, N., Olayinka, I.-F.Y., Adewole, K.S., Oloyede, A.A., Chiroma, H., Sowande, O.A., et al (2022). A review on rain signal attenuation modeling, analysis and validation techniques: Advances, challenges and future direction. Sustainability, 14, 11744, 1-65.

Bryant G.H., Adimula I., Riva C., Brussard G. (1999). Rain attenuation statistics from rain column, diameters and heights. Int. J. of Sat. Commun., 19, 263-283.

Collin R. E. (1985). Antennas and radiowave propagation. McGraw-Hill international editions, electrical engineering series, Singapore, 339-409.

Emiliani L. D., Luini L. & Capsoni C. (2009). Analysis and parameterization of methodologies for the conversion of rain-rate cumulative distributions from various integration times to one minute. IEEE Antennas and Propagation Magazine, 51(3), 70–80.

Garcia-Lopez J.A., Hernando J.M., Selga J. (1988). Simple rain attenuation method for satellite radio links. Year-to-year variability of rainfall for microwave applications in the USA. IEEE Trans. on Ant. and Propag., 36(3), 444-448.

Hossain M.S., Islam M.A. (2017). Estimation of rain attenuation at EHF bands for earth-to-satellite links in Bangladesh. Int. Conf. on Elect., Comp. and Commun. Eng. (ECCE), Cox’s Bazar, Bangladesh, 589-593.

Igwe K. C., Oyedum O. D., Ajewole M. O., Aibinu A. M. (2019). Evaluation of some rain attenuation prediction models for satellite communication at Ku and Ka bands. Journal of Atmospheric and Solar-Terrestrial Physics, 188, 52–61.

Igwe K.C., Oyedum O.D, Ajewole M.O, Aibinu A.M, Ezenwora J.A. (2021) Performance evaluation of some rain rate conversion models for microwave propagation studies. Adv Space Res 67:3098-3105.

Igwe K. C. (2022). Optimal rain attenuation prediction models for earth-space communication at Ku-band in North Central Nigeria. Proceedings of the 7th International Conference on the Applications of Science and Mathematics. Springer Proceedings in Physics, 273, 415-428.

Igwe K. C. (2023). Derivation of regression coefficients and conversion factors for 1-minute rain rate statistics in a tropical environment. Journal of Advanced Industrial Technology and Application, 4 (1), 29-37.

ITU-R (2005). Specific attenuation model for rain for use in prediction methods. Rec. P.838-3, ITU-R P Sers., Int. Telecomm, Union, Geneva.

ITU-R 2007. Propagation data and prediction methods required for the design of earth–space telecommunication systems. Rec. P.618-9, ITU-R P Sers., Int. Telecomm, Union, Geneva.

Isabona, J., Imoize, A.L., Rawat, P., Jamal, S.S., Pant, B., Ojo, S., Hinga, S.K. (2022a). Realistic prognostic modeling of specific attenuation due to rain at microwave frequency for tropical climate region. Wireless Communications and Mobile Computing (Wiley-Hindawi), 1-10.

Isabona, J., Imoize, A.L., Ojo, S., Lee, C.-C., Li, C.-T. (2022b). Atmospheric propagation modelling for terrestrial radio frequency communication links in a tropical wet and dry savanna climate. Information, 13 (141), 1-16.

Lavergnat J., & Golé P. (1998). A stochastic raindrop time distribution model. Journal of Applied Meteorology, 37(8), 805–818.

Mandeep J. S., Allnut J. E. (2007). Rain attenuation predictions at Ku-band in south east Asia Countries. Progress in Electromagnetics, PIERS, 76, 65-74.

Ng Y., Singh M., Singh J., Thiruchelvam V. (2017). Performance analysis of 60-min to 1-min integration time rain rate conversion models in Malaysia. Journal of Atmospheric and Solar-Terrestrial Physics, 167, 13–22.

Ojo J. S., Ajewole M.O., Sarkar S.K. (2008). Rain rate and rain attenuation prediction for satellite communication in Ku and Ka bands over Nigeria. Progress in Electromagnetics, Res. B, 5, 207-223.

Oktaviani, R., Marzuki. (2019). Estimation of rainfall rate cumulative distribution in Indonesia using global satellite mapping of precipitation data. International Conference on Basic Sciences and Its Applications, 2019, 259–265.

Panchal P., Joshi R. (2016). Performance analysis and simulation of rain attenuation models at 12-40 GHz band for an earth space path over Indian cities. 7th Int. Conf. on Commun., Comput. and Virtualiz., ScienceDirect, 79, 801-808.

Pérez-García, N., Pinto, A.D., Torres, J.M., Rivera, Y.E., Mello, L.A.R. S, Garcia, R., Ramírez, E.J., Guevara-Salgado, P. (2023). Preliminary rain rate statistics with one-minute integration time for radio propagation uses in Venezuela. Electronics Letters, 59(6), 1-3.

Rafiqul I., Alam M., Lwas A. K., Mohamad S. Y. (2018). Rain rate distributions for microwave link design based on long term measurement in Malaysia. Indonesian Journal of Electrical Engineering and Computer Science, 10(3), 1023–1029.

Shrestha S., Park J., Choi, D. (2016). Rain rate modeling of 1-min from various integration times in South Korea. SpringerPlus, 5:433, 1-34.

Shrestha S., Choi D. (2017a). Characterization of rain specific attenuation and frequency scaling method for satellite communication in South Korea. Int. J. of Antenn. and Propag., 1-16.

Shrestha S., Choi D. (2017b). Study of 1-min rain rate integration statistics in South Korea. J. of Atm. and Solar-Terr. Phys., 155, 1–11.

Shrestha S., Choi D. (2018). Diurnal and monthly variations of rain rate and rain attenuation on Ka-band satellite communication in South Korea. Prog. In Electromagn. Res. B, 80, 151-171.

Singh R., Acharya R. (2019). Development of a new global model for estimating one-minute rainfall rate. IEEE Transactions on Geoscience and Remote Sensing, 56(11), 6462–6468.

Stutzman W.L., Dishman W.K. (1984). Correction to a simple model for the estimation of rain-induced attenuation along earth-space paths at millimeter wavelengths. Rad. Sci., 19, 946.

Svjatogor L. (1985). Prostranstvennaia korelacia vypadenjija dozdjej vdol zemnoj poverchnostji (in Russian), Symposium expertov stran uchastnic programmy INTERKOSMOS (Interkosmos symposium, theme 5 of the established telecommunication working group, Dresden, GDR).

Tamosiunaite M., Tamosiuniene M., Gruodis A., Tamosiunas S., 2010. Prediction of electromagnetic wave attenuation due to water in the atmosphere. 1. Attenuation due to rain. Innov. Infotech. for Sci, Business and Edu., ISSN 2029-1035, 2(9), 3-10.