GNSS World of China

Volume 46 Issue 4
Aug.  2021
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SHENG Chuanzhen, ZHANG Jingkui, ZHANG Baocheng. Evaluation and analysis of different global ionospheric maps over China[J]. GNSS World of China, 2021, 46(4): 8-15. doi: 10.12265/j.gnss.2021012703
Citation: SHENG Chuanzhen, ZHANG Jingkui, ZHANG Baocheng. Evaluation and analysis of different global ionospheric maps over China[J]. GNSS World of China, 2021, 46(4): 8-15. doi: 10.12265/j.gnss.2021012703
shu

Evaluation and analysis of different global ionospheric maps over China

doi: 10.12265/j.gnss.2021012703
  • 1.

    State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China

  • 2.

    Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430000, China

  • Received Date: 2021-01-27
    Available Online: 2021-08-17
    Abstract
  • We systematically evaluated and analyzed the performance of predicted, rapid and final global ionospheric map (GIM) products, provided by 5 IGS ionospheric analysis centers and the international GNSS Monitoring and Assessment System (iGMAS) comprehensive center, over China. The ionospheric total electron content (TEC) values measured by Global Navigation Satellite System (GNSS) and Jason altimeter satellites are selected as references and performances of GIM in standard single-point positioning are also used as indices in the validation. The results showed that the order of performance from high to low of different types of GIM over China is the final GIM, the rapid GIM and the predicted GIM products. Different GIM products are found to have comparable performances over China during low solar activity. The rapid and final GIM products provided by the Universitat Politècnica de Catalunya (UPC) and iGMAS outperform other GIM products during high solar activity.

     

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