中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
A new method to calibrate residual ionospheric error of GNSS RO bending angle

文献类型：期刊论文

作者Li, Mingzhe1,2,3; Yue, Xinan1,2,3; Wan, Weixing1,2,3
刊名GPS SOLUTIONS
出版日期2022-04-01
卷号26期号:2页码:12
关键词Global Navigation Satellite System (GNSS) Radio occultation (RO) Residual ionospheric error (RIE) Data assimilation electron density Ray-tracing technique
ISSN号1080-5370
DOI10.1007/s10291-022-01235-1
英文摘要Global 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.
WOS关键词GPS RADIO OCCULTATION ; IMPACT ; ATMOSPHERE ; PROFILES ; MODEL
资助项目Project 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]
WOS研究方向Remote Sensing
语种英语
WOS记录号WOS:000773245300001
出版者SPRINGER HEIDELBERG
资助机构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 ; 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
源URL[http://ir.iggcas.ac.cn/handle/132A11/105036]  
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Yue, Xinan
作者单位1.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
推荐引用方式
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.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。