کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5487652 | 1523596 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rain attenuation statistics over millimeter wave bands in South Korea
ترجمه فارسی عنوان
آمار ضعیف شدن باران در باند موج های میلیمتری در کره جنوبی
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
Rain induced degradations are significant for terrestrial microwave links operating at frequencies higher than 10Â GHz. Paper presents analyses done on rain attenuation and rainfall data for three years between 2013 till 2015, in 3.2Â km experimental link of 38Â GHz and 0.1Â km link at 75Â GHz. The less link distance is maintained for 75Â GHz operating frequency in order to have better recording of propagation effect as such attenuation induced by rain. OTT Parsivel is used for collection of rain rate database which show rain rate of about 50Â mm/h and attenuation values of 20.89 and 28.55Â dB are obtained at 0.01% of the time for vertical polarization under 38 and 75Â GHz respectively. Prediction models, namely, ITU-R P. 530-16, Da Silva Mello, Moupfouma, Abdulrahman, Lin and differential equation approach are analyzed. This studies help to identify most suitable rain attenuation model for higher microwave bands. While applying ITU-R P. 530-16, the relative error margin of about 3%, 38% and 42% along with 80, 70, 61% were obtained in 0.1%, 0.01% and 0.001% of the time for vertical polarization under 38 and 75Â GHz respectively. Interestingly, ITU-R P. 530-16 shows relatively closer estimation to measured rain attenuation at 75Â GHz with relatively less error probabilities and additionally, Abdulrahman and ITU-R P. 530-16 results in better estimation to the measured rain attenuation at 38Â GHz link. The performance of prominent rain attenuation models are judged with different error matrices as recommended by ITU-R P. 311-15. Furthermore, the efficacy of frequency scaling technique of rain attenuation between links distribution are also discussed. This study shall be useful for making good considerations in rain attenuation predictions for terrestrial link operating at higher frequencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volumes 152â153, January 2017, Pages 1-10
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volumes 152â153, January 2017, Pages 1-10
نویسندگان
Sujan Shrestha, Dong-You Choi,