| Contribution analysis of QZSS to single-frequency PPP of GPS/BDS/GLONASS/Galileo | |
| Hong, Ju1,2; Tu, Rui1,2,3; Zhang, Rui1,3; Fan, Lihong1,3; Zhang, Pengfei1,3; Han, Junqiang1,3 | |
| 2020-04-01 | |
| 发表期刊 | ADVANCES IN SPACE RESEARCH
 |
| ISSN | 0273-1177 |
| 卷号 | 65期号:7页码:1803-1817 |
| 摘要 | The Quasi-Zenith Satellite System (QZSS) established by the Japan Aerospace Exploration Agency mainly serves the Asia-Pacific region and its surrounding areas. Currently, four in-orbit satellites provide services. Most users of GNSS in the mass market use single-frequency (SF) receivers owing to the low cost. Therefore, it is meaningful to analyze and evaluate the contribution of the QZSS to SF precise point positioning (PPP) of GPS/BDS/GLONASS/Galileo systems with the emergence of GNSS and QZSS. This study compares the performances of three SF PPP models, namely the GRoup and PHase Ionospheric Correction (GRAPHIC) model, GRAPHIC with code observation model, and an ionosphere-constrained model, and evaluated the contribution of the QZSS to the SF PPP of GPS/BDS/GLONASS/Galileo systems. Moreover, the influence of code bias on the SF PPP of the BDS system is also analyzed. A two-week dataset (DOY 013-026, 2019) from 10 stations of the MGEX network is selected for validation, and the results show that: (1) For cut-off elevation angles of 15, 20, and 25 degrees, the convergence times for the static SF PPP of GLONASS + QZSS are reduced by 4.3, 30.8, and 12.7%, respectively, and the positioning accuracy is similar compared with that of the GLONASS system. Compared with the BDS single system, the convergence times for the static SF PPP of BDS QZSS under 15 and 25 degrees are reduced by 37.6 and 39.2%, the horizontal positioning accuracies are improved by 18.6 and 14.1%, and the vertical components are improved by 13.9 and 21.4%, respectively. At cut-off elevation angles of 15, 20, and 25 degrees, the positioning accuracy and precision of GPS/BDS/GLONASS/Galileo + QZSS is similar to that of GPS/BDS/GLONASS/Galileo. And the convergence times are reduced by 7.4 and 4.3% at cut-off elevation angles of 20 and 25 degrees, respectively. In imitating dynamic PPP, the QZSS significantly improves the positioning accuracy of BDS and GLONASS. However, QZSS has little effect on the GPS-only, Galileo-only and GPS/BDS/GLONASS/Galileo. (2) The code bias of BDS IGSO and MEG cannot be ignored in SF PPP. In static SF PPP, taking the frequency band of B1I whose multipath combination is the largest among the frequency bands as an example, the vertical component has a systematic bias of approximately 0.4-1.0 m. After correcting the code bias, the positioning error in the vertical component is lower than 0.2 m, and the positioning accuracy in the horizontal component are improved accordingly. (3) The SF PPP model with ionosphere constraints has a better convergence speed, while the positioning accuracy of the three models is nearly equal. Therefore the GRAPHIC model can be used to get good positioning accuracy in the absence of external ionosphere products, but its convergence speed is slower. (C) 2020 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| 关键词 | Quasi-Zenith satellite system Single-frequency precise point positioning GNSS Analysis of multipath Ionospheric correction |
| 资助者 | program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) |
| DOI | 10.1016/j.asr.2020.01.003 |
| 关键词[WOS] | BEIDOU ; ORBIT ; GPS ; IGS |
| 语种 | 英语 |
| 资助项目 | program of National Key Research and Development Plan of China[2016YFB0501804] ; National Natural Science Foundation of China[41674034] ; National Natural Science Foundation of China[41974032] ; National Natural Science Foundation of China[11903040] ; Chinese Academy of Sciences (CAS)[Y923YC1701] ; Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC028] |
| 资助者 | program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) |
| WOS研究方向 | Engineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Engineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000533503800011 |
| 出版者 | ELSEVIER SCI LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/9365 |
| 专题 | 守时理论与方法研究室 |
| 通讯作者 | Tu, Rui |
| 作者单位 | 1.Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Peoples R China 2.Chinese Acad Sci, Key Lab Precis Nav & Timing Technol, Xian 710600, Peoples R China 3.Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Ju,Tu, Rui,Zhang, Rui,et al. Contribution analysis of QZSS to single-frequency PPP of GPS/BDS/GLONASS/Galileo[J]. ADVANCES IN SPACE RESEARCH,2020,65(7):1803-1817. |
| APA | Hong, Ju,Tu, Rui,Zhang, Rui,Fan, Lihong,Zhang, Pengfei,&Han, Junqiang.(2020).Contribution analysis of QZSS to single-frequency PPP of GPS/BDS/GLONASS/Galileo.ADVANCES IN SPACE RESEARCH,65(7),1803-1817. |
| MLA | Hong, Ju,et al."Contribution analysis of QZSS to single-frequency PPP of GPS/BDS/GLONASS/Galileo".ADVANCES IN SPACE RESEARCH 65.7(2020):1803-1817. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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