Chinese Journal of Polar Research

ADVANCES IN POLAR SCIENCE ›› 2014, Vol. 26 ›› Issue (4): 405-409.DOI: 10.13679/j.jdyj.2014.4.405

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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

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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