Seasonal results of aspect sensitivity from an MF radar over Kunming (25.6N, 103.8E), China

	Seasonal results of aspect sensitivity from an MF radar over Kunming (25.6N, 103.8E), China
	Chen, Jin-Song; Xu, Ji-Yao; Zhao, Zhen-Wei
	2012
会议名称	2012 10th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2012
会议日期	October 22, 2012 - October 26, 2012
会议地点	Xi'an, China
页码	639-642
通讯作者	Chen, J.-S. (jscen@spaceweather.ac.cn)
中文摘要	The physical shapes and causes of these partial reflection scatterers for MF radar is, as yet, an unsolved question. The aspect sensitivity parameterized by a quantity θS is defined often as the rate of decrease of power as a function of angle. Small values of θS imply the existence of specular scatterers. The seasonal results of aspect sensitivity from Kunming MF radar have been studied based on the first 12 months data, which shows a clear seasonal dependence with the bigger values in winter and the smaller values in summer. Aspect sensitivity also presents an evident variation in height, increasing between 80 and 90 km while decreasing from 90 to 100 km. Turbulence velocity measured during the same period supports the proposal that turbulences play an important role in causing specular scatterers which produces aspect sensitivity in D-region for MF radar. © 2012 IEEE.
英文摘要	The physical shapes and causes of these partial reflection scatterers for MF radar is, as yet, an unsolved question. The aspect sensitivity parameterized by a quantity θS is defined often as the rate of decrease of power as a function of angle. Small values of θS imply the existence of specular scatterers. The seasonal results of aspect sensitivity from Kunming MF radar have been studied based on the first 12 months data, which shows a clear seasonal dependence with the bigger values in winter and the smaller values in summer. Aspect sensitivity also presents an evident variation in height, increasing between 80 and 90 km while decreasing from 90 to 100 km. Turbulence velocity measured during the same period supports the proposal that turbulences play an important role in causing specular scatterers which produces aspect sensitivity in D-region for MF radar. © 2012 IEEE.
收录类别	EI
会议录	2012 10th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2012
会议录出版者	IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States
学科主题	空间物理
语种	英语
ISBN号	9781467317993
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/3025]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Chen, Jin-Song,Xu, Ji-Yao,Zhao, Zhen-Wei. Seasonal results of aspect sensitivity from an MF radar over Kunming (25.6N, 103.8E), China[C]. 见:2012 10th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2012. Xi'an, China. October 22, 2012 - October 26, 2012.