Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance
文献类型：期刊论文
| 作者 | Su, Ke1,2; Jin, Shuanggen2,3; Hoque, M. M.4 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2019-01-02 |
| 卷号 | 11期号:2页码:19 |
| 关键词 | GNSS ionospheric delay standard point positioning precise point positioning |
| ISSN号 | 2072-4292 |
| DOI | 10.3390/rs11020171 |
| 英文摘要 | Ionospheric delay is a significant error source in multi-GNSS positioning. We present different processing strategies to fully exploit the ionospheric delay effects on multi-frequency and multi-GNSS positioning performance, including standard point positioning (SPP) and precise point positioning (PPP) scenarios. Datasets collected from 10 stations over thirty consecutive days provided by multi-GNSS experiment (MGEX) stations were used for single-frequency SPP/PPP and dual-frequency PPP tests with quad-constellation signals. The experimental results show that for single-frequency SPP, the Global Ionosphere Maps (GIMs) correction achieves the best accuracy, and the accuracy of the Neustrelitz TECmodel (NTCM) solution is better than that of the broadcast ionospheric model (BIM) in the E and U components. Eliminating ionospheric parameters by observation combination is equivalent to estimating the parameters in PPP. Compared with the single-frequency uncombined (UC) approach, the average convergence time of PPP with the external ionospheric models is reduced. The improvement in BIM-, NTCM- and GIM-constrained quad-constellation L2 single-frequency PPP was 15.2%, 24.8% and 28.6%, respectively. The improvement in convergence time of dual-frequency PPP with ionospheric models was different for different constellations and the GLONASS-only solution showed the least improvement. The improvement in the convergence time of BIM-, NTCM- and GIM-constrained quad-constellation L1/L2 dual-frequency PPP was 5.2%, 6.2% and 8.5%, respectively, compared with the UC solution. The positioning accuracy of PPP is slightly better with the ionosphere constraint and the performance of the GIM-constrained PPP is the best. The combination of multi-GNSS can effectively improve the positioning performance. |
| 资助项目 | National Natural Science Foundation of China-German Science Foundation (NSFC-DFG) Project[41761134092] |
| WOS研究方向 | Remote Sensing |
| 语种 | 英语 |
| WOS记录号 | WOS:000457939400067 |
| 出版者 | MDPI |
| 源URL | [http://119.78.226.72/handle/331011/31943]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Jin, Shuanggen |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Jiangsu, Peoples R China 4.German Aerosp Ctr, Inst Commun & Nav, Kalkhorstweg 53, D-17235 Neustrelitz, Germany |
| 推荐引用方式 GB/T 7714 | Su, Ke,Jin, Shuanggen,Hoque, M. M.. Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance[J]. REMOTE SENSING,2019,11(2):19. |
| APA | Su, Ke,Jin, Shuanggen,&Hoque, M. M..(2019).Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance.REMOTE SENSING,11(2),19. |
| MLA | Su, Ke,et al."Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance".REMOTE SENSING 11.2(2019):19. |
入库方式： OAI收割
来源：上海天文台
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