IGGCAS OpenIR  > 地球与行星物理院重点实验室
A new method to calibrate residual ionospheric error of GNSS RO bending angle
Li, Mingzhe1,2,3; Yue, Xinan1,2,3; Wan, Weixing1,2,3
2022-04-01
Source PublicationGPS SOLUTIONS
ISSN1080-5370
Volume26Issue:2Pages:12
AbstractGlobal Navigation Satellite System (GNSS) radio occultation (RO) has been an active method to explore the earth's atmosphere since 1995. RO-inverted bending angles have significantly contributed to atmospheric weather and climate research via data assimilation. However, the used bending angles still contain residual ionospheric error (RIE) after the well-known linear combination correction and should be removed. In this study, we propose to calibrate the RIE using ray-tracing RO bending angle profiles for the first time. The ionospheric background used for ray-tracing was obtained by a Kalman filter data assimilation algorithm through ingesting multisource ionospheric data. More than 380,000 COSMIC RO events during 2008-2013 were simulated via the EGOPS software for statistical calibration. To evaluate the improving performance, we focus on analyzing the deviation of the bending angle from that of National Center for Atmospheric Research climatology results between 60 and 80 km before and after the calibration. It is found that the amplitude of RIE during daytime is significantly reduced. The 'three troughs' feature of RIE due to the ionosphere is almost eliminated. The solar activity dependence of RIE can also be calibrated to some extent. We further define a parameter named calibration efficiency to evaluate the calibration performance of the method is > 40% at low latitudes and > 80% at the 'three troughs' regions. The results demonstrate that our calibration method works well. It could be potentially used to reduce the RIE in GNSS RO bending angles.
KeywordGlobal Navigation Satellite System (GNSS) Radio occultation (RO) Residual ionospheric error (RIE) Data assimilation electron density Ray-tracing technique
DOI10.1007/s10291-022-01235-1
Funding OrganizationProject of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS
WOS KeywordGPS RADIO OCCULTATION ; IMPACT ; ATMOSPHERE ; PROFILES ; MODEL
Language英语
Funding ProjectProject of Stable Support for Youth Team in Basic Research Field, CAS[YSBR-018] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; Meridian Project ; National Natural Science Foundation of China[41427901] ; Key Research Program of the IGGCAS[IGGCAS-201904]
Funding OrganizationProject of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Meridian Project ; Meridian Project ; Meridian Project ; Meridian Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS
WOS Research AreaRemote Sensing
WOS SubjectRemote Sensing
WOS IDWOS:000773245300001
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105036
Collection地球与行星物理院重点实验室
Corresponding AuthorYue, Xinan
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Mingzhe,Yue, Xinan,Wan, Weixing. A new method to calibrate residual ionospheric error of GNSS RO bending angle[J]. GPS SOLUTIONS,2022,26(2):12.
APA Li, Mingzhe,Yue, Xinan,&Wan, Weixing.(2022).A new method to calibrate residual ionospheric error of GNSS RO bending angle.GPS SOLUTIONS,26(2),12.
MLA Li, Mingzhe,et al."A new method to calibrate residual ionospheric error of GNSS RO bending angle".GPS SOLUTIONS 26.2(2022):12.
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