Article(id=1322506337116860681, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322506335908901129, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.10.482, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1729612800000, receivedDateStr=2024-10-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793239681747, onlineDateStr=2026-10-29, pubDate=1760457600000, pubDateStr=2025-10-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793239681747, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793239681747, creator=13701087609, updateTime=1793239681747, updator=13701087609, issue=Issue{id=1322506335908901129, tenantId=1146029695717560320, journalId=1281212831689347082, year='2025', volume='45', issue='10', pageStart='991', pageEnd='1100', issueExtLink='null', onlineDate='null', pubDate='1760457600000', pubDateStr='2025-10-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793239681460, creator='13701087609', updateTime=1793244369709, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322525999896576487, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322506335908901129, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322525999896576488, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322506335908901129, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1020, endPage=1025, ext={EN=ArticleExt(id=1322506337641148683, articleId=1322506337116860681, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Assessment of Different ZTD Mapping Functions for Precise Point Positioning, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Based on observation data from 77 GNSS stations worldwide, this study systematically evaluates the global applicability of four tropospheric delay mapping function models(GMF, NMF, VMF1, VMF3) and their impact on the accuracy of precise point positioning(PPP). The zenith tropospheric delay(ZTD) for each station was obtained using the PRIDE PPP-AR software. With the ZTD products released by the Center for Orbit Determination in Europe(CODE) as a reference, a comparative analysis of model performance was conducted across geographical zones(low/medium/high latitudes, land/ocean, and altitude gradients). The results indicate that the existing tropospheric delay mapping function models exhibit poorer accuracy in low-latitude, low-altitude, and oceanic regions. The VMF series mapping function models perform better in addressing differences arising from changes in altitude and latitude, and both the GMF and VMF series models show significant correction effects for oceanic stations. In terms of positioning accuracy in the U direction, the GMF, VMF3, and NMF mapping function models perform best in low-latitude, medium-latitude, and high-latitude regions, respectively. Overall, the GMF and VMF series mapping function models demonstrate superior performance in global PPP data processing.
, authors=Yahao ZHANG
1, Qiang WEN
1, *, authorsList=Yahao ZHANG, Qiang WEN, authorCompany=null, correspAuthors=Qiang WEN, authorNote=
ZHANG Yahao, postgraduate, majors in precise point positioning, E-mail: zyhcas@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=1322506344410755349, articleId=1322506337116860681, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=精密单点定位中对流层延迟不同映射模型分析, 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=
基于全球77个GNSS测站观测数据,系统评估4种对流层延迟映射函数模型(GMF、NMF、VMF1、VMF3)的全球适用性及其对精密单点定位(PPP)精度的影响。采用PRIDE PPP-AR软件处理获得各测站天顶对流层延迟(ZTD),以欧洲定轨中心(CODE)发布的ZTD产品为基准,结合地理分区(低/中/高纬度、陆地/海洋、海拔梯度)开展模型性能对比分析。结果表明,现有对流层延迟映射函数模型在低纬度、低海拔、海洋区域精度较差,VMF系列映射函数模型在应对海拔、纬度变化引起的差异时表现较好,GMF和VMF系列映射函数模型对海洋测站改正效果比较显著;U方向定位精度方面,GMF、VMF3、NMF映射函数模型分别在低纬度、中纬度、高纬度表现最好,GMF和VMF系列映射函数模型在全球范围内PPP数据处理中效果较优。
, authors=张亚豪
1, 温强
1, *, authorsList=张亚豪, 温强, authorCompany=null, correspAuthors=温强, authorNote=
, correspAuthorsNote=
, 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=oGvdtOYQaVmjFyMipMN6ag==, magXml=JcmY+AO4X55ERD0jh4bSHw==, pdfUrl=null, pdf=P4wpTRyjy/BrtEwfUAnWjQ==, pdfFileSize=4528519, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=9f7UTdnG5u2hPHAcstItCw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=7MxbkvfNZBNYgP6aU+eWCA==, mapNumber=null, fund=null)}, authors=[Author(id=1322506344771465498, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=zyhcas@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322506344859545884, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, authorId=1322506344771465498, language=EN, stringName=Yahao ZHANG, firstName=Yahao, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, 340 Xudong Street, Wuhan 430077, China, bio={"content":"
ZHANG Yahao, postgraduate, majors in precise point positioning, E-mail: zyhcas@163.com
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ZHANG Yahao, postgraduate, majors in precise point positioning, E-mail: zyhcas@163.com
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1, address=中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室,武汉市徐东大街340号,430077, bio={"content":"
张亚豪,硕士生,主要研究方向为精密单点定位,E-mail: zyhcas@163.com
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张亚豪,硕士生,主要研究方向为精密单点定位,E-mail: zyhcas@163.com
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23(4), articleTitle=PRIDE PPP-AR: An Open-Source Software for GPS PPP Ambiguity Resolution, refAbstract=null), Reference(id=1322506355139785045, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=13, rfOrder=17, authorNames=null, journalName=null, refType=null, unstructuredReference=冯鹏. GNSS对流层误差模型研究及其气象学应用[D]. 武汉: 武汉大学, 2021, articleTitle=null, refAbstract=null), Reference(id=1322506355211088214, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=13, rfOrder=18, authorNames=null, journalName=null, refType=null, unstructuredReference=Feng Peng. Research on GNSS Tropospheric Error Model and Its Meteorological Application[D]. Wuhan: Wuhan University, 2021, articleTitle=null, refAbstract=null)], funds=[Fund(id=1322506353344622914, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, awardId=42025401, language=EN, fundingSource=National Natural Science Foundation of China(42025401), fundOrder=null, country=null), Fund(id=1322506353424314691, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, awardId=42025401, language=CN, fundingSource=国家自然科学基金(42025401), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1322506344645636374, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, xref=null, ext=[AuthorCompanyExt(id=1322506344666607895, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, companyId=1322506344645636374, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, 340 Xudong Street, Wuhan 430077, China), AuthorCompanyExt(id=1322506344679190808, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, companyId=1322506344645636374, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室,武汉市徐东大街340号,430077)])], figs=[ArticleFig(id=1322506346042339631, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Fig. 1, caption=
Spatial distribution of RMSE for PPP-ZTD estimated by different mapping function models, figureFileSmall=0ndCO2XKXXUbYZZb6SrOig==, figureFileBig=9f7UTdnG5u2hPHAcstItCw==, tableContent=null), ArticleFig(id=1322506346113642800, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=图1, caption=
不同映射函数模型估计PPP-ZTD的RMSE空间分布, figureFileSmall=0ndCO2XKXXUbYZZb6SrOig==, figureFileBig=9f7UTdnG5u2hPHAcstItCw==, tableContent=null), ArticleFig(id=1322506346302386481, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Fig. 2, caption=
Differences in tropospheric delay estimationusing different mapping functions, figureFileSmall=MIHuOnatZ+uq+mRfBA6bNw==, figureFileBig=Pbldw226HE6PmmzJSedkQA==, tableContent=null), ArticleFig(id=1322506346365301042, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=图2, caption=
不同映射函数估计对流层延迟差异, figureFileSmall=MIHuOnatZ+uq+mRfBA6bNw==, figureFileBig=Pbldw226HE6PmmzJSedkQA==, tableContent=null), ArticleFig(id=1322506349917876531, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Fig. 3, caption=
RMSE of ZTD estimated by different mapping function models varies with latitude, figureFileSmall=C8scfFz5Q1RtXu7jgfXVCA==, figureFileBig=lKt6Jg7S6bnfuGIzfybbTw==, tableContent=null), ArticleFig(id=1322506349997568308, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=图3, caption=
不同映射函数模型估计的对流层延迟RMSE随纬度的变化情况, figureFileSmall=C8scfFz5Q1RtXu7jgfXVCA==, figureFileBig=lKt6Jg7S6bnfuGIzfybbTw==, tableContent=null), ArticleFig(id=1322506350102425909, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Fig. 4, caption=
RMSE statistics of ocean and land stations for different models, figureFileSmall=YkL1Y26HDXnh+P8m9kqipg==, figureFileBig=L1vrHBJ4pFZbHtizQiQkVg==, tableContent=null), ArticleFig(id=1322506350173729078, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=图4, caption=
不同模型海洋和陆地测站RMSE统计, figureFileSmall=YkL1Y26HDXnh+P8m9kqipg==, figureFileBig=L1vrHBJ4pFZbHtizQiQkVg==, tableContent=null), ArticleFig(id=1322506350249226551, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Tab. 1, caption=
Parameter settings
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| 模型/参数 | 参数设置 |
| PPP模型 | 无电离层组合模型 |
| 解算模式 | 静态 |
| 采样间隔 | 30 s |
| 精密轨道和钟差产品 | WHU精密轨道/钟差 |
| 参数估计方法 | 基于最小二乘的消元法 |
| 对流层延迟先验模型 | Saastamoninen |
| 对流层延迟残差 | 随机游走模型(STO) |
| 截止高度角 | 7° |
| 对流层映射函数 | GMF/NMF/VMF1/VMF3 |
| 梯度估计间隔 | 12 h |
), ArticleFig(id=1322506350643491128, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=表1, caption=
参数设置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型/参数 | 参数设置 |
| PPP模型 | 无电离层组合模型 |
| 解算模式 | 静态 |
| 采样间隔 | 30 s |
| 精密轨道和钟差产品 | WHU精密轨道/钟差 |
| 参数估计方法 | 基于最小二乘的消元法 |
| 对流层延迟先验模型 | Saastamoninen |
| 对流层延迟残差 | 随机游走模型(STO) |
| 截止高度角 | 7° |
| 对流层映射函数 | GMF/NMF/VMF1/VMF3 |
| 梯度估计间隔 | 12 h |
), ArticleFig(id=1322506350723182905, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Tab. 2, caption=
Distribution of stations with large deviations (RMSE>8 mm)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站名 | 经度/(°) | 纬度/(°) | 大地高/m |
| CHPG | -45.00 | -22.68 | 566.66 |
| JOG2 | 110.37 | -7.76 | 174.78 |
| USUD | 138.36 | 36.13 | 1509.03 |
| ACRG | -0.21 | 5.64 | 83.79 |
| IISC | 77.57 | 13.02 | 844.12 |
), ArticleFig(id=1322506350794486074, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=表2, caption=
偏差较大的测站分布(RMSE>8 mm)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站名 | 经度/(°) | 纬度/(°) | 大地高/m |
| CHPG | -45.00 | -22.68 | 566.66 |
| JOG2 | 110.37 | -7.76 | 174.78 |
| USUD | 138.36 | 36.13 | 1509.03 |
| ACRG | -0.21 | 5.64 | 83.79 |
| IISC | 77.57 | 13.02 | 844.12 |
), ArticleFig(id=1322506350937092411, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Tab. 3, caption=
Statistics of tropospheric delay resultsat different altitudes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站名 | 海拔/m | RMSE/mm |
| GMF | NMF | VMF1 | VMF3 |
| BOGT | 2 576.7 | 4.96 | 4.85 | 4.55 | 4.59 |
| NKLG | 31.4 | 6.11 | 6.27 | 6.01 | 6.01 |
| DGAR | -64.7 | 5.05 | 5.32 | 4.83 | 4.79 |
| TASH | 439.7 | 6.12 | 6.42 | 4.14 | 5.24 |
| EBRE | 107.3 | 3.98 | 4.04 | 3.86 | 3.84 |
| GODE | 14.5 | 6.00 | 6.31 | 4.89 | 4.72 |
), ArticleFig(id=1322506351029367100, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=表3, caption=
不同海拔对流层延迟结果统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站名 | 海拔/m | RMSE/mm |
| GMF | NMF | VMF1 | VMF3 |
| BOGT | 2 576.7 | 4.96 | 4.85 | 4.55 | 4.59 |
| NKLG | 31.4 | 6.11 | 6.27 | 6.01 | 6.01 |
| DGAR | -64.7 | 5.05 | 5.32 | 4.83 | 4.79 |
| TASH | 439.7 | 6.12 | 6.42 | 4.14 | 5.24 |
| EBRE | 107.3 | 3.98 | 4.04 | 3.86 | 3.84 |
| GODE | 14.5 | 6.00 | 6.31 | 4.89 | 4.72 |
), ArticleFig(id=1322506351339745597, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Tab. 4, caption=
Statistics of tropospheric delay results at different latitudes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 纬度 | 测站数 | bias/mm | | RMSE/mm |
| GMF | NMF | VMF1 | VMF3 | GMF | NMF | VMF1 | VMF3 |
| |E|≤30° | 29 | -0.12 | -0.39 | -0.33 | -0.11 | | 5.80 | 5.82 | 5.80 | 5.72 |
| 30°<|E|≤60° | 36 | 0.77 | 1.26 | 0.29 | 0.30 | 4.35 | 4.42 | 4.46 | 4.46 |
| |E|>60° | 12 | 0.67 | 0.98 | 0.66 | 0.60 | 3.60 | 3.91 | 3.67 | 3.67 |
| 0°<|E|≤90° | 77 | 0.43 | 0.61 | 0.12 | 0.21 | 4.83 | 4.91 | 4.88 | 4.85 |
), ArticleFig(id=1322506351415243071, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=表4, caption=
不同纬度对流层延迟结果统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 纬度 | 测站数 | bias/mm | | RMSE/mm |
| GMF | NMF | VMF1 | VMF3 | GMF | NMF | VMF1 | VMF3 |
| |E|≤30° | 29 | -0.12 | -0.39 | -0.33 | -0.11 | | 5.80 | 5.82 | 5.80 | 5.72 |
| 30°<|E|≤60° | 36 | 0.77 | 1.26 | 0.29 | 0.30 | 4.35 | 4.42 | 4.46 | 4.46 |
| |E|>60° | 12 | 0.67 | 0.98 | 0.66 | 0.60 | 3.60 | 3.91 | 3.67 | 3.67 |
| 0°<|E|≤90° | 77 | 0.43 | 0.61 | 0.12 | 0.21 | 4.83 | 4.91 | 4.88 | 4.85 |
), ArticleFig(id=1322506351507517760, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=EN, label=Tab. 5, caption=
RMSE statistics of different latitudes in U direction
, figureFileSmall=null, figureFileBig=null, tableContent=
| 纬度 | 测站数 | RMSE/mm |
| GMF | NMF | VMF1 | VMF3 |
| |E|≤30° | 29 | 5.04 | 5.39 | 5.46 | 5.32 |
| 30°<|E|≤60° | 36 | 6.12 | 6.33 | 5.87 | 5.80 |
| |E|>60° | 12 | 5.37 | 5.32 | 5.88 | 5.80 |
| 0°<|E|≤90° | 77 | 5.60 | 5.82 | 5.72 | 5.62 |
), ArticleFig(id=1322506351813701953, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506337116860681, language=CN, label=表5, caption=
不同纬度U方向RMSE统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 纬度 | 测站数 | RMSE/mm |
| GMF | NMF | VMF1 | VMF3 |
| |E|≤30° | 29 | 5.04 | 5.39 | 5.46 | 5.32 |
| 30°<|E|≤60° | 36 | 6.12 | 6.33 | 5.87 | 5.80 |
| |E|>60° | 12 | 5.37 | 5.32 | 5.88 | 5.80 |
| 0°<|E|≤90° | 77 | 5.60 | 5.82 | 5.72 | 5.62 |
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