Numerical Analysis of the Measured Temporal Rainfall Rate and Rain Attenuation in a Tropical Location

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI:10.1109/iconspace53224.2021.9768750

O. O. Ometan, T. Omotosho, S. A. Akinwumi, M. O. Adewusi, T. E. Arijaje, O. A. Adeyemi

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Abstract

Extreme weather condition is one of the major challenges observed in the troposphere due to meteorological weather parameters such as rainfall. Rainfall causes severe attenuation to satellite communication at Ku band. This paper studied the numerical relationship between the calculated rain attenuation and the observed rain rate at Ku band for the tropical station based on a 12-month data measurement. This paper aims at presenting the proportional variation between rain rate and rain attenuation in the locality of interest. A tipping bucket rain gauge is used to obtain and analyse rain rate data. One-minute signal strength measurement were obtained and analysed. The 12-month data were obtained from January till December 2015. The result shows an average rain rate of about 237.0 mm/hr, 114.0 mm/hr, 38.0 mm/hr and 3.0 mm/hr and attenuation of 4.74, 4.25, and 3.59 and 2.66 dB/km at 12.245 GHz, respectively, for 0.001 %, 0.01% and 0.1% and 1 % of the time respectively for the combined values of rain rate and rain attenuation statistics. The result indicates a corresponding direct proportionality between the rain rate and rain attenuation.

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热带地区实测时间降雨率和降雨衰减的数值分析

由于降雨等气象参数的影响，极端天气是对流层观测到的主要挑战之一。降雨对Ku波段卫星通信造成严重衰减。本文基于12个月的实测资料，研究了该热带站Ku波段雨衰减计算值与观测雨率之间的数值关系。本文旨在描述感兴趣地区降雨率与降雨衰减之间的比例变化。倾卸斗雨量计用于获取和分析雨量数据。得到了一分钟信号强度测量值并进行了分析。12个月的数据取自2015年1月至12月。结果表明，在12.245 GHz频率下，平均降雨率分别为237.0 mm/hr、114.0 mm/hr、38.0 mm/hr和3.0 mm/hr，衰减分别为4.74、4.25、3.59和2.66 dB/km，分别占0.001%、0.01%和0.1%和1%的时间。结果表明，降雨率与降雨衰减成正比关系。

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2021 7th International Conference on Space Science and Communication (IconSpace)

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