Data Assimilation of Ground-Based GPS and Radio Occultation Total Electron Content for Global Ionospheric Specification

C. Y. Lin; T. Matsuo; J. Y. Liu; C. H. Lin; J. D. Huba; H. F. Tsai; C. Y. Chen

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Data Assimilation of Ground-Based GPS and Radio Occultation Total Electron Content for Global Ionospheric Specification

机译：基于地面GPS和无线电清层全局电离层规格的数据同化

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This study presents an approach based on the Gauss-Markov Kalman filter to assimilate the total electron content observed from ground-based GPS receivers and space-based radio occultation instrumentations (such as FORMOSAT-3/COSMIC (F3/C) and FORMOSAT-7/COSMIC-2 (F7/C2)) into the International Reference Ionosphere. Observing System Simulation Experiments (OSSEs) show that the data assimilation procedure consisting of the forecast and the measurement update steps can better improve the accuracy of the data assimilation analysis than the assimilation procedure using the measurement update alone. Compared with F3/C, the denser F7/C2 occultation observations can improve the analysis accuracy significantly as suggested by OSSEs. The real data assimilation results are further validated with global ionosphere maps, the global ground-based GPS measurements, and the ionospheric F_2 peak height and electron density sounded by ionosondes. Both the OSSEs and validation results confirm that a number of improvements to the data assimilation procedure presented in this paper can indeed be used to reconstruct the three-dimensional ionospheric electron density adequately.

机译：本研究提出了一种基于Gauss-Markov卡尔曼滤波器的方法，以吸收从基于地面的GPS接收器和基于空间的无线电介质仪器观察到的总电子含量（例如Formosat-3 / COSMIC（F3 / C）和Formosat-7 / COSMIC-2（F7 / C2））进入国际参考电离层。观察系统仿真实验（OSSES）表明，由预测和测量更新步骤组成的数据同化程序可以更好地提高数据同化分析的准确性，而不是单独使用测量更新的同化过程。与F3 / C相比，更密集的F7 / C2掩星观察可以显着提高分析准确性，如OSSES所示。实际数据同化结果进一步验证了全局电离层地图，全局基于地基GPS测量，电离层F_2峰值高度和电子密度被离子泡沫探测。 OSSES和验证结果都证实了本文提出的数据同化程序的多项改进，确实可以用于充分重建三维电离层电子密度。

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来源
《Journal of Geophysical Research, A. Space Physics: JGR》 |2017年第10期|共11页
作者
C. Y. Lin; T. Matsuo; J. Y. Liu; C. H. Lin; J. D. Huba; H. F. Tsai; C. Y. Chen;
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作者单位

Institute of Space Science National Central University Taoyuan Taiwan;

Ann and H. J. Smead Department of Aerospace Engineering Sciences University of Colorado Boulder Boulder CO USA;

Institute of Space Science National Central University Taoyuan Taiwan;

Department of Earth Sciences National Cheng Kung University Tainan Taiwan;

Plasma Physics Division Naval Research Laboratory Washington DC USA;

Department of Earth Sciences National Cheng Kung University Tainan Taiwan;

Institute of Space Science National Central University Taoyuan Taiwan;

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原文格式 PDF
正文语种 eng
中图分类空间物理;
关键词
Data Assimilation; Ground-Based; Radio Occultation Total Electron;

机译：数据同化;基于地面;无线电源极电子;

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专利

1. Data Assimilation of Ground-Based GPS and Radio Occultation Total Electron Content for Global Ionospheric Specification' [J] . Lin C. Y., Matsuo T., Liu J. Y., Journal of Geophysical Research. Biogeosciences . 2017,第10期

机译：基于地面GPS和无线电清除全局电离层规格的数据同化综合
2. Regional 3-D ionospheric electron density specification on the basis of data assimilation of ground-based GNSS and radio occultation data [J] . Ercha Aa, Siqing Liu, Wengeng Huang, Space Weather . 2016,第6期

机译：基于地面GNSS数据同化和无线电掩星数据的区域3-D电离层电子密度规范
3. Global ionosphere map constructed by using total electron content from ground-based GNSS receiver and FORMOSAT-3/COSMIC GPS occultation experiment [J] . Sun Yang-Yi, Liu Jann-Yenq, Tsai Ho-Fang, GPS Solutions . 2017,第4期

机译：通过使用基于地面的GNSS接收器和Formosat-3 / Cormic GPS掩星实验构建的全局电离层地图
4. Ionospheric and Plasmaspheric Contribution to the Total Electron Content Inferred from Ground Data and Radio-Occultation-Derived Electron Density [C] . G. Gonzalez-Casado, J. M. Juan, J. Sanz, International Technical Meeting of the Satellite Division of The Institute of Navigation . 2015

机译：电离层和等离子体的贡献从地面数据和无线电源衍生电子密度推断的总电子含量
5. Characterization of thermal tides at ionospheric altitudes on Mars with Mars Global Surveyor Radio Occultation measurements of electron density. [D] . Cahoy, Kerri L. 2008

机译：使用火星全球测量师无线电掩星法对电子密度进行的火星电离层高度热潮表征。
6. Derivation of global ionospheric Sporadic E critical frequency (foEs) data from the amplitude variations in GPS/GNSS radio occultations [O] . Bingkun Yu, Christopher J. Scott, Xianghui Xue, 2020

机译：从GPS / GNSS无线电掩星的幅度变化中推导全局电离层散态e临界频率（FOES）数据
7. Regional 3-D ionospheric electron density specification on the basis of data assimilation of ground-based GNSS and radio occultation data [O] . Ercha Aa, Siqing Liu, Wengeng Huang, 2016

机译：区域3-D电离层电子密度规范基于地基GNSS和无线电掩星数据的数据同化
8. Using the Global GPS Network and Other Satellite Data to Monitor Ionospheric Total Electron Content [R] . Mannucci, Anthony J., Wilson, Brian D., Yuan, Dah-Ning, 1994

机译：利用全球Gps网络和其他卫星数据监测电离层总电子含量

Data Assimilation of Ground-Based GPS and Radio Occultation Total Electron Content for Global Ionospheric Specification

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