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Estimation of Effective Transmission Loss Due to Subtropical Hydrometeor Scatters using a 3D Rain Cell Model for Centimeter and Millimeter Wave Applications

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Abstract

The problem of hydrometeor scattering on microwave radio communication down links continues to be of interest as the number of the ground and earth space terminals continually grows The interference resulting from the hydrometeor scattering usually leads to the reduction in the signal-to-noise ratio (SNR) at the affected terminal and at worst can even end up in total link outage. In this paper, an attempt has been made to compute the effective transmission loss due to subtropical hydrometeors on vertically polarized signals in Earth–satellite propagation paths in the Ku, Ka and V band frequencies based on the modified Capsoni 3D rain cell model. The 3D rain cell model has been adopted and modified using the subtropical log-normal distributions of raindrop sizes and introducing the equivalent path length through rain in the estimation of the attenuation instead of the usual specific attenuation in order to account for the attenuation of both wanted and unwanted paths to the receiver. The co-channels, interference at the same frequency is very prone to the higher amount of unwanted signal at the elevation considered. The importance of joint transmission is also considered.

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References

  1. G.O. Ajayi, S. Feng, S.M. Radicella, B.M. Reddy (Ed), Handbook on Radio propagation Related to Satellite Communications in Tropical and Subtropical Countries, Trieste: ICTP, 1996, pp. 7–14

    Google Scholar 

  2. M.O Ajewole, J.S. Ojo (2005): Intersystem Interference Due to Hydrometeor Scattering on Satellite Downlink Signals in Tropical Locations, African Journal of Science and Technology (AJST) Science and Engineering Series Vol. 6, No. 2, pp. 84 – 93, December, 2005.

  3. J.S Ojo, R.C. Okeowo, Int. J Infrared Milli Waves (2008) DOI 10.1007/s10762-008-9406-1

  4. C. Capsoni, M. D’Amico (1997): A physically based simple prediction method for scattering interference, Radio Sci. 32(2), pp. 397-407.

    Article  Google Scholar 

  5. W. Doherty W, S.A. Stone, “Forward scatter from rain.” IRE Trans. Antennas Propagation,.Vol. AP-8, pp. 414-418. July 1960.

  6. R. Crane. (1974): Bistatic scatter from rain, IEEE Trans Antenna and Propagation. AP 22 (2), 312-320.

    Article  Google Scholar 

  7. C. Capsoni, F. Fedi, C. Magistroni, A. Pawlina, A. Paraboni (1987) Data and theory for a new model of the horizontal structure of rain cells for propagation applications", Radio Science, Vol. 22, No. 33, pp. 395-404.

    Article  Google Scholar 

  8. J. Awaka, (1989): A 3D rain cell model for the study of interference due to hydrometeor scattering, J. Comm. Res. Lab., 36 (147), pp. 13-44.

    Google Scholar 

  9. R. L Olsen, D. V. Rogers, R. A. Hulays, M. M. Z. Kharadly (1993): Interference due to hydrometeor scatter on satellite communication links, Proc. IEEE, 81(6), pp. 914-922.

    Article  Google Scholar 

  10. A. R. Holt, R. McGuiness, D.G Charlton, P. T. Thompson (1993): The development of a model to estimate the bistatic transmission loss associated with intersystem interference, IEEE Trans. Antennas and Propagation. AP 41(10), pp. 1442-1431

    Google Scholar 

  11. S.P Sitorus, I.A. Glover (2000): Rapid hydrometeor bistatic scatter calculations using non-orthogonal function expansion Int. J. Satell. Commun. 18, pp. 207-218.

    Article  Google Scholar 

  12. C. Capsoni, L. Luini, M. D’ Amico, The multiExcell model for the prediction of the interference due to hydrometeor scattering, EUCAP 2010, IEEE, Barcelonia Spain, 12-16 April, 2010.

  13. M. O. Ajewole, L. B. Kolawole, G. O. Ajayi (1999): Evaluation of bistatic intersystem interference due to scattering by hydrometeors on tropical paths, Int. J. Satell. Commun., 17, 337-356.

  14. M. O Ajewole (2003): Bistatic interference due to tropical rainfall types: a comparison of rain-cell models, Attidella Fondazione Giorgio Ronchi, 58 (1), pp. 121-141.

    Google Scholar 

  15. J.S. Ojo, S.K. Sarkar, A.T. Adediji (2008): Intersystem Interference on horizontally polarized radio signals in tropical climate, Indian Journal of radio and Space Physics, Vol. 37, pp. 408-413

    Google Scholar 

  16. J. S Ojo, C. I. Joseph-Ojo (2008): “An estimate of interference effect on horizontally polarized signal transmission in the tropical locations: a comparison of rain-cell models,” Prog. Electromagnet. Res. C. 6, pp. 67–79.

    Article  Google Scholar 

  17. O.A. Alao (2012): Rain (Hydrometer) bistatic scatter calculations using Nigcomsat-1(R) and Intelsat performance metrics (An Overview of extract from Dissertation “Micro-wave interference due to Rain Scatter at Ku and Ka Bands in Akure, South West, Nigeria, Vol. 1 (2), pp. 40-44.

  18. Owolawi P.A (2011): Raindrop Size Distribution Model for the Prediction of Rain Attenuation in Durban, PIERS ONLINE, VOL. 7, NO. 6, pp. 516-523.

  19. Ishimaru A, Wave Propagation and Scattering in Random Media, IEEE Press and Oxford University Press, New York, NY, USA, 1997.

    MATH  Google Scholar 

  20. G. O. Ajayi, I. E. Owolabi (1987): Rainfall parameters from Distrometer dropsize measurements at a tropical station, Ann. Telecomm., 42(1-2), pp. 3-12.

  21. I.A. Glover and P.M Grant, Digital Communication 3rd edition, Pearson Education Ltd, Edinburgh Gate, Harlow, England, 2010.

    Google Scholar 

  22. ITU-R rec. P 838-3, Specific attenuation model for rain for use in prediction methods, ITU Geneva, 2005

  23. P.A. Owolawi, S.J. Malinga (2013): Computation of Rain Scattering Properties at SHF and EHF for Radio Wave Propagation in South Africa, Presented at URSI, 2013, Ottawa, Ontario, Canada,

  24. Commission of the European Communities on Cooperation in the Fields of Scientific and Technical Research, COST Project 210 campaign, Final Rept. EUR 13407EN –C ISBN 92- 826-2400-5 Brussels, (1991).

  25. South Africa Weather: http://www.southafrica.info/plantrip/travel_tips/questions/climate.htm

  26. P.A Owolawi, M.O. Fashuyi, T.J. Afullo (2006): Rainfall rate modeling for LOS radio systems in South Africa”, SAIEE Transactions, African research Journal, vol.97(1), March, 2006.

  27. ITU-R, Rec. P 836-5, Water vapour surface density and total columnar content, ITU Geneva, 2013

  28. R. S Ray (1972): “Broadband complex refractive indices of ice and water” Appl. Opt. 11(8), pp. 1811–1836

    Article  Google Scholar 

  29. DVB-Calculator, 2014, http://www.satellite-calculations.com/Satellite/Downlink.htm. Accessed 30 April 2014.

  30. ITU-R rec. P 676-8, Attenuation by Atmospheric gases, ITU Geneva, 2009.

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Acknowledgements

The authors wish to acknowledge the Centre of Radio Access Network and Rural Communication (RAN-RC) Niche Area, Mangosuthu University of Technology (MUT), Umlazi, KZN, South Africa. They also thank Professors Capsoni and D’Amico all of the Politecnico di Milano for the 3D Algorithm used in this work.

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  1. Department of Electrical Engineering, Mangosuthu University of Technology, P.O. Box 12363, Jacobs, 4026, Durban, South Africa

    J. S Ojo & P. A Owolawi

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  1. J. S Ojo
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  2. P. A Owolawi
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Correspondence to J. S Ojo.

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Ojo, J.S., Owolawi, P.A. Estimation of Effective Transmission Loss Due to Subtropical Hydrometeor Scatters using a 3D Rain Cell Model for Centimeter and Millimeter Wave Applications. J Infrared Milli Terahz Waves 35, 1068–1082 (2014). https://doi.org/10.1007/s10762-014-0114-8

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