IGS real-time service for global ionospheric total electron content modeling
IGS real-time service for global ionospheric total electron content modeling
复制标题
全球电离层总电子含量建模的 IGS 实时服务
DOI:
10.1007/s00190-020-01360-0
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发表时间:
2020-02
影响因子:
4.4
通讯作者:
Blot Alexis
中科院分区:
文献类型:
--
作者:
Li Zishen;Wang Ningbo;Hern;ez-Pajares Manuel;Yuan Yunbin;Krankowski Andrzej;Liu Ang;Zha Jiuping;Garcia-Rigo Alberto;Roma-Dollase David;Yang Heng;Laurichesse Denis;Blot Alexis
Benefiting from global multi-frequency and multi-constellation GNSS measurements provided by the experimental International GNSS real-time service (IGS RTS), a predicting-plus-modeling approach employed by Chinese Academy of Sciences (CAS) for the routine generation of real-time global ionospheric maps (RT-GIM) is first reported. Along with RT-GIMs generated by Universitat Politècnica de Catalunya (UPC), the quality of CAS and UPC RT-GIMs in IONEX format is assessed during a low soar activity period from September 2017 to December 2019. The differential slant total electron contents (dSTEC) derived from 50 GPS stations of the IGS and Jason-3 vertical TECs (VTEC) over the ocean are used as references. In comparison with different reference TECs, CAS and UPC RT-GIMs are approximately 1.7–4.9% and 8.6–12.5% worse than the respective post-processed GIMs CASG and UQRG, respectively. Using RTCM ionospheric data streams from CAS, Centre National d’Etudes Spatiales (CNES) and UPC, the first experimental IGS combined RT-GIM is generated and validated in actual real-time conditions. Compared to Jason-3 VTEC measurements available during the period of common availability, from October 2018 to April 2019, RT-GIM discrepancies present similar relative RMS errors, which are 33, 36, 36 and 38% for CNES, combined one, UPC and CAS, respectively. Aside from a better understanding of the influence of working in the original IONEX versus RTCM ionospheric formats, the update to a new experimental adaptation of RT strategy is highlighted by UPC, and the computation of multi-layer RT-GIM is emphasized by CAS in view of the inadequacy of single-layer ionospheric assumption in the presence of large latitudinal gradients.
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影响因子:
2.6
作者:
Wang Ningbo;Li Zishen;Montenbruck Oliver;Tang Chengpan
通讯作者:
Tang Chengpan
影响因子:
5.2
作者:
J. Juan;A. Rius;M. Hernández‐Pajares;J. Sanz
通讯作者:
J. Juan;A. Rius;M. Hernández‐Pajares;J. Sanz
影响因子:
4.4
作者:
Ciraolo, L.;Azpilicueta, F.;Radicella, S. M.
通讯作者:
Radicella, S. M.
影响因子:
4.4
作者:
Wang, Ningbo;Yuan, Yunbin;Tan, Bingfeng
通讯作者:
Tan, Bingfeng
影响因子:
1.6
作者:
Jakowski, N.;Mayer, C.;Wilken, V.
通讯作者:
Wilken, V.