NSSC OpenIR
Ground-based GNSS VTEC constrained ionospheric correction method for atmospheric occultation
Alternative TitleWOS:000595589000004
Liu CongLiang1,2,3; Sun YueQiang1,2,3; Du QiFei1,2,3; Bai WeiHua1,2,3; Wang XianYi1,2,3; Li Wei1,2
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2020
Volume63Issue:12Pages:4324-4332
DOI10.6038/cjg2020O0147
ISSN0001-5733
Language中文
KeywordGNSS atmospheric radio occultation Bending angle Ionospheric error Ground-based GNSS VTEC GPS RADIO OCCULTATION ERRORS VALIDATION CHAMP MODEL GNOS
AbstractIonosphere is a major error source of Global Navigation Satellite System (GNSS) radio occultation (RO), this paper proposed a ground-based GNSS vertical total electron content (VTEC) constrained ionospheric error correction method, which accounts for the ionospheric asymmetry along the occultation ray path as well as the first- and second-order ionospheric terms. It combines the ground-based GNSS VTEC horizontal change information and the ionospheric model vertical change information to estimate the electron density along the occultation ray path, then calculates the bending angle first- and second-order ionospheric error profiles under the assumption of bilateral local spherical symmetry along the inbound side and outbound side rays. The GNSS RO bending angle first- and second-order ionospheric error profiles was calculated using MetOp-A and GRACE missions observation data and international GNSS service (IGS) GNSS VTEC data from a low solar activity day (i. e. , July 15, 2008) and a high solar activity day (i. e. , July 15, 2013). The comparative analysis shows that the empirical model consistent with the theoretical model in terms of the second-order Residual Ionospheric Error (RIE) and with the observation data in terms of the first- and second-order bending angle ionospheric errors. Therefore, this method can be used for those RO events with low quality L2 observations and even loss of L2 signal, to correct the first- and second-order ionospheric errors to improve the bending angle accuracy and the RO observations utilization.
Indexed BySCI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7555
Collection中国科学院国家空间科学中心
Affiliation1.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
2.Beijing Key Lab Space Environm Explorat, Beijing 100190, Peoples R China
3.Joint Lab Occultat Atmosphere & Climate JLOAC, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu CongLiang,Sun YueQiang,Du QiFei,et al. Ground-based GNSS VTEC constrained ionospheric correction method for atmospheric occultation[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(12):4324-4332.
APA Liu CongLiang,Sun YueQiang,Du QiFei,Bai WeiHua,Wang XianYi,&Li Wei.(2020).Ground-based GNSS VTEC constrained ionospheric correction method for atmospheric occultation.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(12),4324-4332.
MLA Liu CongLiang,et al."Ground-based GNSS VTEC constrained ionospheric correction method for atmospheric occultation".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.12(2020):4324-4332.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu CongLiang]'s Articles
[Sun YueQiang]'s Articles
[Du QiFei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu CongLiang]'s Articles
[Sun YueQiang]'s Articles
[Du QiFei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu CongLiang]'s Articles
[Sun YueQiang]'s Articles
[Du QiFei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.