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  2. 地质与地球物理研究所
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  4. 中国科学院地球与行星物理重点实验室
Using GNSS radio occultation data to derive critical frequencies of the ionospheric sporadic E layer in real time

文献类型：期刊论文

作者Yu, Bingkun4,5; Scott, Christopher J.5; Xue, Xianghui2,3,4; Yue, Xinan1; Dou, Xiankang4
刊名GPS SOLUTIONS
出版日期2020-11-10
卷号25期号:1页码:11
ISSN号1080-5370
关键词Global navigation satellite system Radio occultation FORMOSAT-3 COSMIC S4 index Ionosphere Ionospheric irregularities Sporadic E Ionosonde foEs Critical frequency
DOI10.1007/s10291-020-01050-6
英文摘要The small-scale electron density irregularities in the ionosphere have a significant impact on the interruptions of Global Navigation Satellite System (GNSS) navigation and the accuracy of GNSS positioning techniques. The sporadic ionospheric E (Es) layer significantly contributes to the transient interruptions of signals (loss of lock) for GNSS tracking loops. These effects on the GNSS radio occultation (RO) signals can be used to derive the global location and intensity of Es layers as a complement to ground-based observations. Here we conduct statistical analyses of the intensity of Es layers, based on the scintillation index S4max from the FORMOSAT-3/COSMIC during the period 2006-2014. In comparison with simultaneous observations from an ionosonde network of five low-to-middle latitude ionosondes, the S4max indices from COSMIC, especially the small values, are linearly related to the critical frequency of Es layers (f(o)Es). An accumulated period of less than 1 h is required to derive the short-term variations in real-time ionospheric Es layers. A total of 30.22%, 69.57% and 98.13% coincident hourly f(o)Es values have a relative difference less than 10%, 30% and 100%. Overall, the GNSS RO measurements have the potential to provide accurate hourly observations of Es layers. Observations with S4max < 0.4 (f(o)Es < 3.6 MHz), accounting for 66% of COSMIC S4 measurements, have not been used fully previously, as they are not easily visible in ground-based ionosonde data.
WOS关键词SODIUM LAYERS ; SCINTILLATIONS ; MIDLATITUDE ; MESOSPHERE ; DIGISONDE ; MODEL
资助项目National Natural Science Foundation of China[41774158] ; National Natural Science Foundation of China[41474129] ; National Natural Science Foundation of China[41421063] ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation[1908085QD155] ; Fundamental Research Fund for the Central Universities ; Royal Society via the Newton International Fellowship scheme
WOS研究方向Remote Sensing
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:000594139600001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; Fundamental Research Fund for the Central Universities ; Fundamental Research Fund for the Central Universities ; Royal Society via the Newton International Fellowship scheme ; Royal Society via the Newton International Fellowship scheme ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; Fundamental Research Fund for the Central Universities ; Fundamental Research Fund for the Central Universities ; Royal Society via the Newton International Fellowship scheme ; Royal Society via the Newton International Fellowship scheme ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; Fundamental Research Fund for the Central Universities ; Fundamental Research Fund for the Central Universities ; Royal Society via the Newton International Fellowship scheme ; Royal Society via the Newton International Fellowship scheme ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; open research project of CAS Large Research Infrastructures, Anhui Provincial Natural Science Foundation ; Fundamental Research Fund for the Central Universities ; Fundamental Research Fund for the Central Universities ; Royal Society via the Newton International Fellowship scheme ; Royal Society via the Newton International Fellowship scheme
源URL[http://ir.iggcas.ac.cn/handle/132A11/98656]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Yu, Bingkun; Xue, Xianghui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China
3.Univ Sci & Technol China, Anhui Mengcheng Geophys Natl Observat & Res Stn, Mengcheng, Anhui, Peoples R China
4.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei, Anhui, Peoples R China
5.Univ Reading, Dept Meteorol, Reading, Berks, England
推荐引用方式
GB/T 7714		 Yu, Bingkun,Scott, Christopher J.,Xue, Xianghui,et al. Using GNSS radio occultation data to derive critical frequencies of the ionospheric sporadic E layer in real time[J]. GPS SOLUTIONS,2020,25(1):11.
APA Yu, Bingkun,Scott, Christopher J.,Xue, Xianghui,Yue, Xinan,&Dou, Xiankang.(2020).Using GNSS radio occultation data to derive critical frequencies of the ionospheric sporadic E layer in real time.GPS SOLUTIONS,25(1),11.
MLA Yu, Bingkun,et al."Using GNSS radio occultation data to derive critical frequencies of the ionospheric sporadic E layer in real time".GPS SOLUTIONS 25.1(2020):11.

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来源：地质与地球物理研究所

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