极区电离层TEC监测和发布系统  

MONITORING AND DISTRIBUTION SYSTEM ABOUT TEC OF POLAR IONOSPHERE

作　　者：安家春[1,2] 艾松涛[1,2] 王泽民[1,2] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]武汉大学中国南极测绘研究中心,武汉430079

出　　处：《极地研究》2010年第4期423-430,共8页Chinese Journal of Polar Research

基　　金：国家测绘局南极考察地区基础测绘项目(1469990324229);中国极地科学战略研究基金项目(20080102)联合资助

摘　　要：极区是研究各种高空大气物理现象和日地关系的理想场所,通过GPS获取的电离层TEC信息具有高精度、全天候、大范围等优势,所以利用GPS研究极区电离层有重要意义。本文所设计的极区电离层信息监测和发布系统,包含数据回传、数据处理、数据发布三个部分。数据回传包括卫星网络回传和格式转换。数据处理是利用每天回传的GPS双频数据,解算单站VTEC,解决了硬件延迟的求解问题,并用二次建模获得测站上空的VTEC,计算结果表明该方法能较好地给出电离层TEC的大小及变化规律。数据发布是通过中国极地科学考察管理信息系统提供实时的查询服务。Polar regions are ideal places to investigate physical phenomenon of higher atmosphere and solar-terrestrial relationship,and GPS-based TEC has advantages of high precision,all weather and large field,so it is significant to research polar ionosphere using GPS. Monitoring and distribution system about TEC,designed in this paper,contains data transmission,data processing,data distribution. Firstly,data are sent back and formats are converted. Secondly, by using the GPS dual-frequency data,TEC of single station is calculated,with the method of twice modeling after DCB elimination. The result shows that this method reflects variation of TEC exactly. At last,TEC is distributed in real-time with online inquiry service,supported by Chinese Polar Scientific Expedition Management Information System.

关 键 词：电离层 TEC 监测 发布 

分 类 号：P353[天文地球—空间物理学]