Prediction of Radar Reflectivity along Radio Link
Radiowave propagating through a rain zone,will be scattered,depolarized,absorbed and delayed in time.All these effects of rain on the wave propagation are related to the frequency at which the signal is transmitted and polarization of the wave as well as to the rain rate,which influences the form and size distribution of the raindrop.The average power received by the bistatic radar is proportional to the product of reflectivity and attenuation.These can be measured in practice but sometime there is need to determine them separately.In order to determine radar reflectivity,backscattering coefficient needs to be estimated.This study makes predictions about backscattering coefficient caused by hydro meters along terrestrial radio links,operated at wide bandwidth of 10-140 GHz frequencies.The scattering properties of the spherical raindrop are calculated for different sizes of raindrops.From the scattering properties,the back cross-sections for the spherical raindrops are determined for different frequencies.These are integrated over different established raindrop-size distribution models to formulate radar reflectivity and fitted to generate power-law models.
Chrispin T.Mulangu Senzo J.Malinga Thomas J.Afullo
Department of Electrical Engineering,Mangosuthu University of Technology Umlazi,KwaZulu-Natal 4031,S School of Electrical,Electronic & Computer Engineering University of KwaZulu-Natal,Durban 4041,South
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
264-267
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）