Browse > Article

Empirical Study on the Prediction of Rain Attenuation in EHF(44 GHz) Band  

Park Yong-Ho (Department of Radio Science and Engineering, Chungnam National University)
Lee Joo-Hwan (Digital Broadcasting Research Division, ETRI)
Pack Jeong-Ki (Department of Radio Science and Engineerig, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.8, 2005 , pp. 848-854 More about this Journal
Abstract
The attenuation due to rain has been recognized as one of the major causes of unavailability of radio communication systems operating above about 10 GHz. To design radio links for telecommunications and to evaluate attenuation due to rainfall, it is important to have a good prediction model for rain attenuation such as a model for drop-size distribution of rainfall(DSD), a theoretical model for specific rain attenuation, and an empirical model fur effective path length through rain. In this paper, the extended generalized gamma distribution for drop-size distribution, based on the measurements in Chnugnam National University, is proposed as a new DSD model, and predicted specific attenuation characteristics using proposed DSD model and rain attenuation values in the 44 GHz satellite path using ITU-R effective path length model, are analysed. The predicted attenuation levels are also compared. It is found that an accurate prediction method for DSD is very important to reduce the prediction error in the local satellite path.
Keywords
Rain; Distribution; Attenuation; DSD;
Citations & Related Records
연도 인용수 순위
  • Reference
1 박용호, 박민영, 류동협, 백정기 'EHF(44GHz) 대역 빗방울 크기 분포와 강우 감쇠측정 및 모델링', 한국전자파학회 종합학술발표회 논문집,vol. 14, no. 1, pp.127-130, 2004년 11월
2 M. P. M. Hall, et al., 'Rain drop sizes and rainfall rate measured by dual-polarization radar', Nature, vol. 285, pp. 195-198, May 1980   DOI   ScienceOn
3 T. Manabe, T. Ihara, and Y. Furahama, 'Inference of raindrop size distribution from attenuation and rain rate measurement', IEEE Trans. Antennas Propagat., vol. 32, no. 5, pp. 474-478, 1984   DOI
4 J. O. Laws, D. A. Parsons, 'The relation of raindrop-size to intensity', Tras. American Geophy. Union, vol. 24, pp. 452-460, 1943   DOI
5 lTU-R, 'Specific attenuation model for rain for use in prediction methods', ITU-R Rec., pp. 838, 1999
6 T. Ihara, Y. Furuhama, and T. Manabe, 'Inference of raindrop size distribution from rain attenuation statistics at 12, 35, and 82 GHz', IECE Trans., vol. E67, pp. 211-217, 1984
7 H. Jiang, M. Sano, and M. Sekino, 'Weibull raindrop-size distribution and its application to rain attenuation', lEE Proc. Microw. Antennas Propag., vol. 144, no. 3, pp. 197-200, 1997