Article(id=1322940975177413058, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322940959071285581, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.07.325, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1720281600000, receivedDateStr=2024-07-07, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343307536, onlineDateStr=2026-10-30, pubDate=1749916800000, pubDateStr=2025-06-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343307536, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343307536, creator=13701087609, updateTime=1793343307536, updator=13701087609, issue=Issue{id=1322940959071285581, tenantId=1146029695717560320, journalId=1281212831689347082, year='2025', volume='45', issue='6', pageStart='551', pageEnd='660', issueExtLink='null', onlineDate='null', pubDate='1749916800000', pubDateStr='2025-06-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343303697, creator='13701087609', updateTime=1793343303697, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=587, endPage=592, ext={EN=ArticleExt(id=1322940975374545347, articleId=1322940975177413058, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Real-Time Coseismic Displacement Correction of High-Rate GNSS Based on Multipath Hemispherical Map, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To mitigate the unmodeled multipath errors in traditional dynamic precise point positioning(PPP) and enhance the accuracy of high-rate GNSS real-time coseismic displacement measurements, this paper constructed an undifferenced and uncombined PPP multipath error correction model based on the multipath hemispherical map(MHM). This method employs undifferenced and uncombined PPP to resolve the residuals of pseudorange and phase. It then constructs a refined MHM model using multi-day residual sequences, which is subsequently applied to dynamic PPP real-time positioning on the target day. Using the example of the MW8.2 earthquake that occurred south of Alaska in 2021, we analyzed the real-time coseismic displacement results before and after model correction. The average RMS reduction rates in the E, N, U directions were 52.9%, 55.0%, and 50.7%, respectively, leading to an overall improvement of 51.7%. Comparing the real-time coseismic displacement extracted by the method in this paper with that extracted by the strong seismometer after baseline correction, the former more accurately reflects the displacement changes during the earthquake, indicating the stability and reliability of the proposed model.
, authors=Haili LONG
1, Yanyan LI
1, *, Longfei DONG
1, authorsList=Haili LONG, Yanyan LI, Longfei DONG, authorCompany=null, correspAuthors=Yanyan LI, authorNote=
LONG Haili, postgraduate, majors in high precision GNSS positioning, high frequency GNSS seismology, E-mail: 202282020075@sdust.edu.cn
, 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=1322940976926437842, articleId=1322940975177413058, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=基于多路径半天球图的高频GNSS实时同震位移修正, columnId=1322506193558422163, journalTitle=大地测量与地球动力学, columnName=地震地质, runingTitle=null, highlight=null, articleAbstract=
为削弱传统动态精密单点定位(PPP)中未模型化的多路径误差,提高高频GNSS实时同震位移精度,本文基于多路径半天球图(MHM)模型构建非差非组合PPP多路径误差改正模型。该方法通过非差非组合PPP解算伪距和相位残差,利用多天残差序列构建MHM模型,将其应用于目标天的动态PPP实时定位解,以2021年美国阿拉斯加州以南8.2级地震为例,对比模型修正前后的实时同震位移。结果表明,E、N、U方向定位结果的平均RMS下降率为52.9%、55.0%和50.7%,整体改善幅度达51.7%。将实时提取的同震位移结果与基线校正后的强震仪结果进行对比,前者能更准确地反映地震时的位移变化,表明本文模型稳定、可靠。
, authors=龙海立
1, 李艳艳
1, *, 董龙飞
1, authorsList=龙海立, 李艳艳, 董龙飞, authorCompany=null, correspAuthors=李艳艳, authorNote=
, correspAuthorsNote=
李艳艳, 副教授, 主要从事高精度GNSS数据处理、高频GNSS地震学研究, E-mail: yylee@sdust.edu.cn
LI Yanyan, associate professor, majors in high precision GNSS data processing, high frequency GNSS seismology, E-mail: yylee@sdust.edu.cn
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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=mk/C1QgYVuAydgfexyDnGA==, magXml=dBjk3z8TeL8QZT3YDAqVAw==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=zobO3euNMh8/AOYWJ7bEUA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=IiyaO4amGgmvHyaReeuvrg==, mapNumber=null, fund=null)}, authors=[Author(id=1322940977257787863, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=202282020075@sdust.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322940977341673945, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, authorId=1322940977257787863, language=EN, stringName=Haili LONG, firstName=Haili, middleName=null, lastName=LONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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93 (10): 2037- 2051, articleTitle=Multipath Extraction and Mitigation for High-Rate Multi-GNSS Precise Point Positioning, refAbstract=null)], funds=[Fund(id=1322940982383227395, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, awardId=41804001, language=EN, fundingSource=National Natural Science Foundation of China(41804001), fundOrder=null, country=null), Fund(id=1322940983956091396, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, awardId=41804001, language=CN, fundingSource=国家自然科学基金(41804001), fundOrder=null, country=null), Fund(id=1322940984090309125, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, awardId=ZR2019BD006, language=EN, fundingSource=Natural Science Foundation of Shandong Province(ZR2019BD006), fundOrder=null, country=null), Fund(id=1322940984182583814, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, awardId=ZR2019BD006, language=CN, fundingSource=山东省自然科学基金(ZR2019BD006), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1322940977178096083, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, xref=null, ext=[AuthorCompanyExt(id=1322940977186484692, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, companyId=1322940977178096083, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 College of Geomatics, Shandong University of Science and Technology, 579 Qianwangang Road, Qingdao 266590, China), AuthorCompanyExt(id=1322940977199067605, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, companyId=1322940977178096083, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 山东科技大学测绘与空间信息学院, 青岛市前湾港路579号, 266590)])], figs=[ArticleFig(id=1322940980537733619, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 1, caption=
Modeling process of multipath error correction in undifferenced and uncombined PPP based on MHM model, figureFileSmall=0FPt0Trv3WmnAN1f+WvnbQ==, figureFileBig=zobO3euNMh8/AOYWJ7bEUA==, tableContent=null), ArticleFig(id=1322940980596453876, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图1, caption=
基于MHM的非差非组合PPP多路径误差改正建模流程, figureFileSmall=0FPt0Trv3WmnAN1f+WvnbQ==, figureFileBig=zobO3euNMh8/AOYWJ7bEUA==, tableContent=null), ArticleFig(id=1322940980814557685, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 2, caption=
Location of epicenter and stations, figureFileSmall=vJjCmR7vJTT5aCawdu35ZQ==, figureFileBig=wJvEdoaHqRPfpdm6bMHT+Q==, tableContent=null), ArticleFig(id=1322940980890055158, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图2, caption=
震中与测站位置, figureFileSmall=vJjCmR7vJTT5aCawdu35ZQ==, figureFileBig=wJvEdoaHqRPfpdm6bMHT+Q==, tableContent=null), ArticleFig(id=1322940980965552631, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 3, caption=
Sky plot of multipath hemispherical map, figureFileSmall=RxK6/oH/ijdYphOrSIrbSQ==, figureFileBig=s172Ix36DJmWEeB2jWBFDQ==, tableContent=null), ArticleFig(id=1322940981045244408, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图3, caption=
多路径半天球格网天空图, figureFileSmall=RxK6/oH/ijdYphOrSIrbSQ==, figureFileBig=s172Ix36DJmWEeB2jWBFDQ==, tableContent=null), ArticleFig(id=1322940981183656441, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 4, caption=
Boxplot of dynamic PPP positioning errors before and after multipath correction at each station, figureFileSmall=Vy4Xq+i9PaLVZQZ6rFWYWw==, figureFileBig=IgXQuM+pyBpjymvM2+/W4A==, tableContent=null), ArticleFig(id=1322940981280125434, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图4, caption=
各测站经多路径误差改正前后动态PPP定位误差箱线, figureFileSmall=Vy4Xq+i9PaLVZQZ6rFWYWw==, figureFileBig=IgXQuM+pyBpjymvM2+/W4A==, tableContent=null), ArticleFig(id=1322940981364011515, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 5, caption=
Comparison of PSD of dynamic PPP displacements in various directions before and after model correction, figureFileSmall=N5BL+Q2Zh9D+6YiRHNtrXQ==, figureFileBig=53sVl527WVR9FmnHJfFD7Q==, tableContent=null), ArticleFig(id=1322940981418537468, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图5, caption=
本文模型改正前后动态PPP各方向位移PSD对比, figureFileSmall=N5BL+Q2Zh9D+6YiRHNtrXQ==, figureFileBig=53sVl527WVR9FmnHJfFD7Q==, tableContent=null), ArticleFig(id=1322940981619864061, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 6, caption=
Time series comparison of dynamic PPP errors in various directions at station AC12 before and after model correction, figureFileSmall=WntVTq79JfZAWeMpvHdZNA==, figureFileBig=9ow9qRbg+dxPsY5pKG8vlw==, tableContent=null), ArticleFig(id=1322940981703750142, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图6, caption=
AC12测站模型改正前后动态PPP各方向误差时间序列对比, figureFileSmall=WntVTq79JfZAWeMpvHdZNA==, figureFileBig=9ow9qRbg+dxPsY5pKG8vlw==, tableContent=null), ArticleFig(id=1322940981942825471, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Fig. 7, caption=
Analysis of coseismic displacement correlation and time series at AC12 station after multipath error correction, figureFileSmall=4JgQxE91ONc+YN7pL9JoBQ==, figureFileBig=lOGP48hJRTFf4ElRs4wqdQ==, tableContent=null), ArticleFig(id=1322940982026711552, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=图7, caption=
AC12测站修正多路径误差后提取同震位移相关性分析和时间序列, figureFileSmall=4JgQxE91ONc+YN7pL9JoBQ==, figureFileBig=lOGP48hJRTFf4ElRs4wqdQ==, tableContent=null), ArticleFig(id=1322940982077043201, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=EN, label=Tab. 1, caption=
Root mean square errors of dynamic PPP positioning results before and after multipath correction at each station
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站 | E方向 | | N方向 | | U方向 |
| 改正前RMS/m | 改正后RMS/m | 下降率/% | 改正前RMS/m | 改正后RMS/m | 下降率/% | 改正前RMS/m | 改正后RMS/m | 下降率/% |
| AC12 | 0.059 | 0.027 | 53.6 | | 0.052 | 0.035 | 33.2 | | 0.088 | 0.044 | 50.1 |
| AV09 | 0.101 | 0.035 | 65.2 | | 0.101 | 0.042 | 58.3 | | 0.149 | 0.060 | 60.2 |
| AC67 | 0.062 | 0.029 | 52.8 | | 0.091 | 0.036 | 60.9 | | 0.133 | 0.060 | 54.4 |
| AC03 | 0.058 | 0.031 | 46.9 | | 0.088 | 0.034 | 60.7 | | 0.130 | 0.071 | 45.8 |
| SELD | 0.067 | 0.041 | 38.8 | | 0.120 | 0.056 | 53.0 | | 0.139 | 0.081 | 41.8 |
| 均值 | 0.070 | 0.033 | 52.9 | | 0.090 | 0.041 | 55.0 | | 0.128 | 0.063 | 50.7 |
), ArticleFig(id=1322940982160929282, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940975177413058, language=CN, label=表1, caption=
模型改正前后各测站动态PPP定位结果的均方根误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站 | E方向 | | N方向 | | U方向 |
| 改正前RMS/m | 改正后RMS/m | 下降率/% | 改正前RMS/m | 改正后RMS/m | 下降率/% | 改正前RMS/m | 改正后RMS/m | 下降率/% |
| AC12 | 0.059 | 0.027 | 53.6 | | 0.052 | 0.035 | 33.2 | | 0.088 | 0.044 | 50.1 |
| AV09 | 0.101 | 0.035 | 65.2 | | 0.101 | 0.042 | 58.3 | | 0.149 | 0.060 | 60.2 |
| AC67 | 0.062 | 0.029 | 52.8 | | 0.091 | 0.036 | 60.9 | | 0.133 | 0.060 | 54.4 |
| AC03 | 0.058 | 0.031 | 46.9 | | 0.088 | 0.034 | 60.7 | | 0.130 | 0.071 | 45.8 |
| SELD | 0.067 | 0.041 | 38.8 | | 0.120 | 0.056 | 53.0 | | 0.139 | 0.081 | 41.8 |
| 均值 | 0.070 | 0.033 | 52.9 | | 0.090 | 0.041 | 55.0 | | 0.128 | 0.063 | 50.7 |
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