文章基本信息

标题：COMPUTATION OF ATTENUATION DUE TO RAIN FOR KU BAND FREQUENCIES USING DSD FOR THE TROPICAL REGION
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作者：GOVARDHANI.IMMADI ; M.VENKATA NARAYANA ; SARAT K KOTAMRAJU 等
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2017
卷号：95
期号：10
出版社：Journal of Theoretical and Applied
摘要：These days we are observing a rise in spectral congestion mainly due to increased usage of wireless technologies. This lead to occupy higher band frequencies for efficient communication. As part of this, antennas operating at Giga Hertz frequencies are being designed and implemented for satellite communications. But, the microwave signals are experiencing loss of signal strength when interfered with various layers of the atmosphere, precipitation, clouds etc. Here the major impairment is due to rain and so a model which can estimate signal attenuation has to be developed. This can be quantified using conventional methods like physical modelling and empirical modelling using regression technique for years of data. This rises complexity in the calculation of attenuation caused by rain. Handling such large data is very difficult and it is also a time-consuming process. Rain drop distribution replaced this hard work with simplified analysis for any specific region. First, a suitable distribution model is selected for the region and attenuation is calculated using Mie scattering for all spherical rain drops, considering a major part of it is due to its size. This is followed by equation modelling using MATLAB. This experiment is conducted at K L University located 16.44o East and 80.60o North.
关键词：Spectral Congestion; Mie Scattering; Drop Size; Drop Size Distribution; Precipitation; Attenuation Due To Rain.