2005年至2015年拉萨地区电离层变化特性分析  

Analysis of Ionospheric Variation Characteristics in Lhasa from 2005 to 2015

作　　者：朱农 ZHU Nong(Fujian Gutian Zhongmei Ecological Environment Development Co.,Ltd.,Ningde,Fujian Province,352200 China)

机构地区：[1]福建古田中煤生态环境发展有限公司,福建宁德352200

出　　处：《科技资讯》2021年第5期101-107,共7页Science & Technology Information

摘　　要：针对电离层对无线电传播带来的影响,该文利用2005—2015年拉萨站GPS双频接收机观测到的电离层垂直总电子含量(vertical total electron content,VTEC)数据,研究了拉萨地区的电离层变化的特性。实验分析结果表明:拉萨地区的电离层VTEC值分别有明显的半年周期和年周期变化。在2011年和2014年出现“冬季异常”现象。此外,拉萨地区垂直电离层VTEC与太阳活动指数F 10.7之间的为强相关性,两者之间的相关性系数达到0.99。In view of the influence of ionosphere on radio propagation,the ionospheric Vertical Total Electron Content(VTEC)data observed by GPS dual-band receiver at Lhasa Station from 2005 to 2015 are used in this paper,we study the characteristics of the ionospheric variation in Lhasa area.The experimental analysis show that the ionospheric VTEC values in Lhasa region have obvious semi-annual and annual cycle changes respectively.In 2011 and 2014,"Winter Anomaly"phenomenon occurred.In addition,there is a strong correlation between the vertical ionospheric VTEC and the solar activity index F10.7 in Lhasa,and the correlation coefficient between them is 0.99.

关 键 词：电离层 垂直电离层 时间特性 冬季异常 

分 类 号：P352.1[天文地球—空间物理学]