极地研究

极地研究 ›› 2014, Vol. 26 ›› Issue (4): 405-409.DOI: 10.13679/j.jdyj.2014.4.405

• 研究论文 • 上一篇    下一篇

极区电离层TEC经验模型的建立及适用性分析

宁新国1,2   安家春1  王泽民1   

  1.  
    1武汉大学中国南极测绘研究中心，湖北 武汉 430079；
    2长春市测绘院，吉林 长春 130021
  • 收稿日期:2013-07-22 修回日期:2013-08-27 出版日期:2014-12-30 发布日期:2014-12-30
  • 通讯作者: 安家春
  • 基金资助:

    国家自然科学基金面上项目;国家自然科学基金青年项目;国家自然科学基金重点项目;中国极地科学战略研究基金;国家海洋局极地科学重点实验室开放基金;中国博士后科学基金;国家测绘地理信息局科技项目

MODELING AND APPLICABILITY ANALYSIS OF EMPIRICAL POLAR IONOSPHERIC TEC MODELS

Ning Xinguo1,2, An Jiachun1, Wang Zemin1   

  1.  
    1Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China;
    2Changchun Institute of Surveying and Mapping, Changchun 130021, China
  • Received:2013-07-22 Revised:2013-08-27 Online:2014-12-30 Published:2014-12-30

PDF (PC)

1290

被引次数

2

摘要： 利用南极地区40多个GPS跟踪站2010年全年的实测数据，实现了极区电离层TEC建模，对多项式模型、广义三角级数函数模型、低阶球谐函数模型、改进的球谐函数模型以及球冠谐函数模型等五种电离层经验模型进行了比较，并评估了其在极区的适用性情况。结果表明，各个模型在极区都可以取得比较好的拟合精度，残差均值在0.1TECU以内，均方根误差在2TECU以内。

关键词: TEC, 电离层模型, 拟合精度, 南极

Abstract: Total electron content (TEC) were derived from GPS measurements collected from more than 40 continuously operating stations in Antarctica during 2010, and then were modeled using five commonly used regional models: the poly model (POLY), the generalized trigonometric series function model (GTSF), the low-degree spherical harmonic function model (LSH), the adjusted spherical harmonic function model (ASHF) and spherical cap harmonic analysis (SCHA). The five models were compared with assess their applicability in polar regions. The results showed that all five models performed well in Antarctica, with 0.1 TECU of residual mean value and 2 TECU of root mean square error.

Key words: TEC, ionospheric model, fitting, Antarctica