Article(id=1322506597117575608, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322506501562937604, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.1.549, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1733068800000, receivedDateStr=2024-12-02, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793239743737, onlineDateStr=2026-10-29, pubDate=1765728000000, pubDateStr=2025-12-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793239743737, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793239743737, creator=13701087609, updateTime=1793239743737, updator=13701087609, issue=Issue{id=1322506501562937604, tenantId=1146029695717560320, journalId=1281212831689347082, year='2025', volume='45', issue='12', pageStart='1211', pageEnd='1316', issueExtLink='null', onlineDate='null', pubDate='1765728000000', pubDateStr='2025-12-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793239720954, creator='13701087609', updateTime=1793239720954, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=1226, endPage=1233, ext={EN=ArticleExt(id=1322506597302124985, articleId=1322506597117575608, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Quality Evaluation of CNES Real-Time Orbit and Clock Products from the Fault and User Range Accuracy, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Using the real-time orbit and clock products from CNES over a one-year period, with URE(user range error) as the evaluation metric, this study analyzes the fault rates, fault types, fault sources, as well as the post-fault accuracy and precise point positioning(PPP) performance of GPS, Galileo, BDS-2, and BDS-3 by comparing them with post-processed products. The results indicate that the fault rates of GPS and Galileo are lower than those of BDS, with significant differences observed between the fault rates of BDS-3 and BDS-2. Regarding fault types, abrupt faults are the least common, while clock offsets are the primary source of faults(accounting for over 65%). After fault elimination, the mean URA(user range accuracy) values for GPS, Galileo, and BDS-3 are 0.02 m, 0.03 m, and 0.05 m, respectively, whereas there is considerable variation in URA among different satellites in BDS-2. Global station simulated kinematic PPP tests demonstrate that excluding satellite fault periods can effectively ensure positioning accuracy.
, authors=Zhenyu WU
1, Bao SHU
1, 2, 3, *, Li WANG
1, 2, 3, Lihong FAN
4, Qin ZHANG
1, 2, 3, Wei QU
1, 2, 3, authorsList=Zhenyu WU, Bao SHU, Li WANG, Lihong FAN, Qin ZHANG, Wei QU, authorCompany=null, correspAuthors=Bao SHU, authorNote=
WU Zhenyu, postgraduate, majors in real-time precise point positioning, E-mail: 19973848058@163.com
, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322506600988918218, articleId=1322506597117575608, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=CNES实时轨道钟差产品故障及用户测距精度评估, columnId=1322506169105633839, journalTitle=大地测量与地球动力学, columnName=现代大地测量, runingTitle=null, highlight=null, articleAbstract=
利用CNES 1 a的实时轨道与钟差产品,以用户测距误差(user range error,URE)为评价指标,通过与事后产品对比的方法分析GPS、Galileo、BDS-2和BDS-3的故障率、故障类型、故障来源及故障排除后的精度与PPP性能。结果显示,GPS与Galileo的故障率低于BDS,BDS-3与BDS-2的故障率存在显著差异;对于故障类型而言,突变故障最少,而钟差为主要故障来源(大于65%);故障排除后,GPS、Galileo、BDS-3的用户测距精度(user range accuracy, URA)均值分别为0.02 m、0.03 m、0.05 m,BDS-2中不同卫星URA差异较大。全球测站仿动态PPP测试显示,剔除卫星故障时段可有效保障定位精度。
, authors=吴震宇
1, 舒宝
1, 2, 3, *, 王利
1, 2, 3, 范丽红
4, 张勤
1, 2, 3, 瞿伟
1, 2, 3, authorsList=吴震宇, 舒宝, 王利, 范丽红, 张勤, 瞿伟, authorCompany=null, correspAuthors=舒宝, authorNote=
, correspAuthorsNote=
舒宝,博士,副教授,主要从事GNSS高精度定位研究,E-mail:baos613@163.com
SHU Bao, PhD, associate professor, majors in GNSS high precision positioning, E-mail: baos613@163.com
, copyrightStatement=
版权所有,未经授权,不得转载。, copyrightOwner=大地测量与地球动力学编辑部, extLink=null, articleAbsUrl=null, sourceXml=EIs1J5X6oTlkE/qij+HPUQ==, magXml=eLkHEQzDkjlMO5i1lgpgiw==, pdfUrl=null, pdf=t5Eqd3KHvtdf9P0lDyRuBw==, pdfFileSize=6857174, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=iw029fVcbZ+MAXUyXo73kQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=zc4O33+UtVigboeKLIqg6Q==, mapNumber=null, fund=null)}, authors=[Author(id=1322506601743892952, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=19973848058@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322506601827779034, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, authorId=1322506601743892952, language=EN, stringName=Zhenyu WU, firstName=Zhenyu, middleName=null, lastName=WU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=1 School of Geological Engineering and Geomatics, Chang'an University, 126 Yanta Road, Xi'an 710054, China, bio={"content":"
WU Zhenyu, postgraduate, majors in real-time precise point positioning, E-mail: 19973848058@163.com
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1, address=1 长安大学地质工程与测绘学院, 西安市雁塔路126号, 710054, bio={"content":"
吴震宇,硕士生,主要从事实时精密单点定位研究,E-mail:19973848058@163.com
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1, 2, 3, *, address=1 School of Geological Engineering and Geomatics, Chang'an University, 126 Yanta Road, Xi'an 710054, China
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1, 2, 3, *, address=1 长安大学地质工程与测绘学院, 西安市雁塔路126号, 710054
2 地理信息工程国家重点实验室, 西安市雁塔路中段1号, 710054
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2 地理信息工程国家重点实验室, 西安市雁塔路中段1号, 710054
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1, 2, 3, address=1 School of Geological Engineering and Geomatics, Chang'an University, 126 Yanta Road, Xi'an 710054, China
2 State Key Laboratory of Geo-Information Engineering, 1 Mid-Yanta Road, Xi'an 710054, China
3 Key Laboratory of Western China's Mineral Resources and Geological Engineering, Ministry of Education, 126 Yanta Road, Xi'an 710054, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322506605883671030, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, authorId=1322506605334217201, language=CN, stringName=张勤, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 地理信息工程国家重点实验室, 西安市雁塔路中段1号, 710054
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companyId=1322506601660006868, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=4 National Time Service Center, CAS, 3 East-Shuyuan Road, Xi'an 710600, China), AuthorCompanyExt(id=1322506601676784086, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, companyId=1322506601660006868, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=4 中国科学院国家授时中心, 西安市书院路3号, 710600)])], figs=[ArticleFig(id=1322506607561392648, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 1, caption=
Fault types of URE, figureFileSmall=7XuLMlVp3gxhbmCNQ+WE9A==, figureFileBig=iw029fVcbZ+MAXUyXo73kQ==, tableContent=null), ArticleFig(id=1322506607632695818, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图1, caption=
URE的故障类型, figureFileSmall=7XuLMlVp3gxhbmCNQ+WE9A==, figureFileBig=iw029fVcbZ+MAXUyXo73kQ==, tableContent=null), ArticleFig(id=1322506607817245195, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 2, caption=
Faults caused by different anomaly sources, figureFileSmall=cGgEViMcM+1Gdv/KYAGpuw==, figureFileBig=JgKPp2/GEvEsJMkWqw6XwQ==, tableContent=null), ArticleFig(id=1322506607930491404, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图2, caption=
不同异常来源引起的故障, figureFileSmall=cGgEViMcM+1Gdv/KYAGpuw==, figureFileBig=JgKPp2/GEvEsJMkWqw6XwQ==, tableContent=null), ArticleFig(id=1322506609599824398, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 3, caption=
Distribution of 12 MGEX stations selected in the RT-PPP experiment, figureFileSmall=YYQpzwnXrO0Q7wApv5OIKg==, figureFileBig=hPiTAtyBsA0TjqX5XIMAsw==, tableContent=null), ArticleFig(id=1322506609679516175, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图3, caption=
RT-PPP实验所选12个MGEX测站分布, figureFileSmall=YYQpzwnXrO0Q7wApv5OIKg==, figureFileBig=hPiTAtyBsA0TjqX5XIMAsw==, tableContent=null), ArticleFig(id=1322506609755013648, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 4, caption=
UREworst histograms for each system, figureFileSmall=BRx8O9MY7sGbS6IoFqWo8g==, figureFileBig=f0hdiP6blXIRBbzZztECcQ==, tableContent=null), ArticleFig(id=1322506609826316817, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图4, caption=
各系统UREworst直方图, figureFileSmall=BRx8O9MY7sGbS6IoFqWo8g==, figureFileBig=f0hdiP6blXIRBbzZztECcQ==, tableContent=null), ArticleFig(id=1322506610031837714, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 5, caption=
ECDF of URE for each satellite, figureFileSmall=MNpd3mIKd6o5K6w38q41Zg==, figureFileBig=gYm+2HGsytjyw5KKWzDPlg==, tableContent=null), ArticleFig(id=1322506610119918099, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图5, caption=
每颗卫星的URE的经验累积分布函数, figureFileSmall=MNpd3mIKd6o5K6w38q41Zg==, figureFileBig=gYm+2HGsytjyw5KKWzDPlg==, tableContent=null), ArticleFig(id=1322506610199609876, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 6, caption=
Satellite status of CNES real-time products on 2023-11-06, figureFileSmall=UoaFV4Uf3/UPJJUVDwo7uQ==, figureFileBig=8ftsIQuAYHvH5HpZTNJ4Yg==, tableContent=null), ArticleFig(id=1322506612162544149, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图6, caption=
2023-11-06 CNES实时产品各卫星状态, figureFileSmall=UoaFV4Uf3/UPJJUVDwo7uQ==, figureFileBig=8ftsIQuAYHvH5HpZTNJ4Yg==, tableContent=null), ArticleFig(id=1322506612275790358, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 7, caption=
Time series of MAS1 station before and after pre-processing for real-time product, figureFileSmall=jhhcJNBnDKY1Bkf5qGZRfQ==, figureFileBig=AjyWVeFHDEqvwAOU5g4N9A==, tableContent=null), ArticleFig(id=1322506612334510615, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图7, caption=
MAS1站在实时产品预处理前后的时间序列, figureFileSmall=jhhcJNBnDKY1Bkf5qGZRfQ==, figureFileBig=AjyWVeFHDEqvwAOU5g4N9A==, tableContent=null), ArticleFig(id=1322506613970289177, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Fig. 8, caption=
Positioning errors of each station before and after pre-processing for real-time product, figureFileSmall=HRnCEFW64X1GTPzMXb1BzQ==, figureFileBig=D+Vjbot0VMMxAQEWhADfSw==, tableContent=null), ArticleFig(id=1322506614079341082, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=CN, label=图8, caption=
实时产品预处理前后各测站定位误差, figureFileSmall=HRnCEFW64X1GTPzMXb1BzQ==, figureFileBig=D+Vjbot0VMMxAQEWhADfSw==, tableContent=null), ArticleFig(id=1322506614171615771, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506597117575608, language=EN, label=Tab. 1, caption=
Weighting coefficients of the influence of errors in R, A, and C directions for each satellite type on URE[17]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | GPS | Galileo | BDS MEO | BDS GEO/IGSO |
| wR | 0.98 | 0.98 | 0.98 | 0.99 |
| $w_{A, C}^2$ | 1/49 | 1/61 | 1/54 | 1/126 |
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各卫星类型R、A、C方向误差对URE影响的权重系数[17]
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| 参数 | GPS | Galileo | BDS MEO | BDS GEO/IGSO |
| wR | 0.98 | 0.98 | 0.98 | 0.99 |
| $w_{A, C}^2$ | 1/49 | 1/61 | 1/54 | 1/126 |
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The maximum half-angle corresponding to the orbital altitude of each satellite type
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| 参数 | GPS | Galileo | BDS MEO | BDS GEO/IGSO |
| 轨道高/km | 20 200 | 23 616 | 21 528 | 35 786 |
| θmax/(°) | 13.88 | 12.27 | 13.20 | 8.69 |
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各卫星类型轨道高度对应的最大半张角
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| 参数 | GPS | Galileo | BDS MEO | BDS GEO/IGSO |
| 轨道高/km | 20 200 | 23 616 | 21 528 | 35 786 |
| θmax/(°) | 13.88 | 12.27 | 13.20 | 8.69 |
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Estimation results of constellation and satellite fault probability of each system
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| 卫星系统 | Psat | Pconst |
| GPS | 1.2×10-3 | 2.7×10-4 |
| Galileo | 1.3×10-3 | 3.8×10-4 |
| BDS-2 | 5.7×10-3 | 1.7×10-3 |
| BDS-3 | 2.1×10-3 | 1.6×10-3 |
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各系统星座和卫星故障率估计结果
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| 卫星系统 | Psat | Pconst |
| GPS | 1.2×10-3 | 2.7×10-4 |
| Galileo | 1.3×10-3 | 3.8×10-4 |
| BDS-2 | 5.7×10-3 | 1.7×10-3 |
| BDS-3 | 2.1×10-3 | 1.6×10-3 |
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The proportion of different fault types and fault sources in each satellite type
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| 卫星系统 | 故障类型 | | 故障来源 |
| 突变/% | 阶跃/% | 斜坡/% | 由钟差引起/% | 由轨道与钟差共同引起/% |
| GPS | 0.7 | 54.2 | 45.1 | | 65.4 | 34.6 |
| Galileo | 0.8 | 9.3 | 89.9 | 94.0 | 6.0 |
| BDS-2 | 0.6 | 75.7 | 9.3 | 90.8 | 9.2 |
| BDS-3 | 1.8 | 48.7 | 49.4 | 77.4 | 22.6 |
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不同故障类型与故障来源在各卫星类型中占比
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| 卫星系统 | 故障类型 | | 故障来源 |
| 突变/% | 阶跃/% | 斜坡/% | 由钟差引起/% | 由轨道与钟差共同引起/% |
| GPS | 0.7 | 54.2 | 45.1 | | 65.4 | 34.6 |
| Galileo | 0.8 | 9.3 | 89.9 | 94.0 | 6.0 |
| BDS-2 | 0.6 | 75.7 | 9.3 | 90.8 | 9.2 |
| BDS-3 | 1.8 | 48.7 | 49.4 | 77.4 | 22.6 |
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URA for different satellites
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| 卫星系统/卫星类型 | PRN | URA/m |
| GPS | - | 0.02 |
| Galileo | - | 0.03 |
| BDS-3 | - | 0.05 |
| BDS-2/IGSO | C06 | 0.16 |
| BDS-2/IGSO | C08 | 0.15 |
| BDS-2/IGSO | C09 | 0.07 |
| BDS-2/IGSO | C10 | 0.08 |
| BDS-2/MEO | C11 | 0.15 |
| BDS-2/MEO | C12 | 0.14 |
| BDS-2/IGSO | C13 | 0.12 |
| BDS-2/MEO | C14 | 0.17 |
| BDS-2/MEO | C16 | 0.14 |
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不同卫星的URA
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| 卫星系统/卫星类型 | PRN | URA/m |
| GPS | - | 0.02 |
| Galileo | - | 0.03 |
| BDS-3 | - | 0.05 |
| BDS-2/IGSO | C06 | 0.16 |
| BDS-2/IGSO | C08 | 0.15 |
| BDS-2/IGSO | C09 | 0.07 |
| BDS-2/IGSO | C10 | 0.08 |
| BDS-2/MEO | C11 | 0.15 |
| BDS-2/MEO | C12 | 0.14 |
| BDS-2/IGSO | C13 | 0.12 |
| BDS-2/MEO | C14 | 0.17 |
| BDS-2/MEO | C16 | 0.14 |
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