Experimental Investigation on Light Intensity Fluctuation at Night in Lanzhou Area

doi:10.3788/gzxb20184704.0401001

	Experimental Investigation on Light Intensity Fluctuation at Night in Lanzhou Area
	Wang, Hui-Qin; Li, Yuan; Hu, Qiu; Bao, Zhong-Xian; Cao, Ming-Hua
刊名	Guangzi Xuebao/Acta Photonica Sinica
	2018-04-01
卷号	47 期号:4
关键词	Atmospheric structure Dust Light polarization Light transmission Probability distributions Refractive index Scintillation Turbulence Atmospheric structure constant of refractive indices Experimental investigations Exponential Weibull distribution Laser transmission Light intensity fluctuations Rytov variance Statistical characteristics Turbulence intensity
ISSN号	10044213
DOI	10.3788/gzxb20184704.0401001
英文摘要	A wireless optical transmission experiment with a link length of 610m was carried out at night in Lanzhou area to investigate the statistical characteristics of light intensity fluctuation in sunny, overcast, sleet and dust days. The atmospheric structure constant of refractive index Cn2 in different meteorological conditions were measured by using the scintillation method. The measured maximum, minimum and mean value and the standard deviation of Cn2 indicate that the range of Cn2 is 1.06×10-15 m-2/3~ 1.05×10-13 m-2/3 of the experimental period, which belongs to moderate turbulence. Moreover, it also indicates that the fluctuation of Cn2 in sunny day and sleet day are greater than overcast day and dust day. Furthermore, Rytov variance is analyzed by using the measured light intensity values. The results show that in sunny day, sleet day and dust day, the light intensity fluctuation belongs to weak fluctuation at most of the time and there is a small part of the time it belongs to moderate fluctuation. However, the light intensity fluctuation in overcast day belongs to weak fluctuation in all time. The light intensity fluctuation in sunny day and sleep day are greater than overcast day and dust day. We can conclude that the probability distribution of light intensity in different meteorological conditions is closest to the exponential weibull distribution by comparing the nonlinear fitting results of the logarithmic normal, Gamma-Gamma and exponential Weibull distribution. The goodness of exponential Weibull distribution is greater than 0.989 95. In the weak to medium fluctuation region, the Gamma-Gamma distribution fits better than the lognormal distribution. © 2018, Science Press. All right reserved.
WOS研究方向	Optics
语种	中文
出版者	Chinese Optical Society
WOS记录号	WOS:000436774000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114090]
专题	计算机与通信学院
作者单位	School of Computer& Communication, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Hui-Qin,Li, Yuan,Hu, Qiu,et al. Experimental Investigation on Light Intensity Fluctuation at Night in Lanzhou Area[J]. Guangzi Xuebao/Acta Photonica Sinica,2018,47(4).
APA	Wang, Hui-Qin,Li, Yuan,Hu, Qiu,Bao, Zhong-Xian,&Cao, Ming-Hua.(2018).Experimental Investigation on Light Intensity Fluctuation at Night in Lanzhou Area.Guangzi Xuebao/Acta Photonica Sinica,47(4).
MLA	Wang, Hui-Qin,et al."Experimental Investigation on Light Intensity Fluctuation at Night in Lanzhou Area".Guangzi Xuebao/Acta Photonica Sinica 47.4(2018).