Article(id=1322506548962767464, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322506501562937604, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.11.525, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1731859200000, receivedDateStr=2024-11-18, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793239732255, onlineDateStr=2026-10-29, pubDate=1765728000000, pubDateStr=2025-12-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793239732255, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793239732255, creator=13701087609, updateTime=1793239732255, 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=1294, endPage=1303, ext={EN=ArticleExt(id=1322506549126345321, articleId=1322506548962767464, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=A
K-Means-Based Least Squares Collocation Method and Its Application in High-Precision Fitting and Estimation of Large-Scale Crustal Velocity Fields, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To address the issues of abnormal and non-smooth fitting results in sparse monitoring station areas and block margins when using the traditional least squares collocation (TLSC) algorithm for high-precision fitting of crustal motion velocity fields in large-scale regions, a K-means clustering-based least squares collocation method (KLSC) is developed by integrating the K-means clustering algorithm with the TLSC algorithm. The effectiveness of this method is validated using the GNSS-measured crustal motion velocity field on the Qinghai-Xizang plateau. The results show that: 1) Compared to the TLSC algorithm, the KLSC algorithm leverages the advantages of the K-means algorithm in unsupervised classification to first divide the study area into multiple sub-regions with similar velocities based on the inherent characteristics of the GNSS velocity field, and then applies TLSC for velocity field fitting within each sub-region, thereby avoiding the impact of local complex geological environments on the accuracy of regional velocity field fitting; 2) The KLSC algorithm selects fitting parameters based on the proximity of each grid point to the cluster centers, resolving the issue of poor fitting results in data-sparse areas; 3) By utilizing secondary nearest-neighbor fitting combined with convolution filtering, the KLSC algorithm effectively addresses the non-smooth fitting results at block margins; 4) The RMSE accuracy and correlation of the velocity fields fitted by the KLSC algorithm are superior to those of the TLSC algorithm, with improvements in RMSE accuracy of 37% to 48.2% and 52.1% to 67.2%, and increases in correlation of 24.1% to 24.7% and 4.7% to 5.2% for the eastward and northward fitted velocity fields, respectively.
, authors=Cheng WANG
1, Wei QU
1, 2, *, Jiuyuan LI
1, Xingyou TANG
1, Guangyao WANG
1, Kai YANG
1, authorsList=Cheng WANG, Wei QU, Jiuyuan LI, Xingyou TANG, Guangyao WANG, Kai YANG, authorCompany=null, correspAuthors=Wei QU, authorNote=
WANG Cheng, postgraduate, majors in geodetic inversion of crustal deformation, E-mail: 2022126014@chd.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=1322506553249346178, articleId=1322506548962767464, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=一种基于
K-means聚类的最小二乘配置法及在大尺度地壳速度场高精度拟合推估中的应用, columnId=1322506197874356701, journalTitle=大地测量与地球动力学, columnName=地壳运动, runingTitle=null, highlight=null, articleAbstract=
针对传统最小二乘配置(traditional least squares collocation,TLSC)算法在大尺度区域地壳运动速度场高精度拟合中,在监测站点稀疏区域与块体边缘处速度场拟合结果会出现异常与不平滑的问题,结合K-means聚类算法与TLSC算法发展了一种基于K-means聚类的最小二乘配置法(KLSC),并在青藏高原GNSS地壳运动实测速度场中验证该方法的有效性。结果表明:1)相较于TLSC算法,KLSC算法利用K-means算法在无监督分类中的优势,基于GNSS速度场本身特征先将研究区域划分为多个速度相似的子区域,然后在每个子区域内分别利用TLSC进行速度场拟合,避免了局部复杂地质环境对区域速度场拟合精度的影响;2)KLSC算法以各网格点到各聚类中心的距离最近为依据选取拟合参数,解决了数据稀疏区域速度场拟合结果较差的问题;3)KLSC算法利用次近距离拟合并结合卷积滤波,有效解决了块体边缘处速度场拟合结果不平滑的问题;4)KLSC算法拟合的速度场的RMSE精度和相关性均优于TLSC算法,东、北向拟合速度场RMSE精度分别提高37%~48.2%和52.1%~67.2%,相关性分别提高24.1%~24.7%和4.7%~5.2%。
, authors=王程
1, 瞿伟
1, 2, *, 李久元
1, 唐兴友
1, 王光耀
1, 杨凯
1, authorsList=王程, 瞿伟, 李久元, 唐兴友, 王光耀, 杨凯, authorCompany=null, correspAuthors=瞿伟, authorNote=
, correspAuthorsNote=
瞿伟,博士,教授,博士生导师,主要从事地壳形变大地测量反演、地质灾害高精度监测及成因机理研究,E-mail: maikerqq@163.com
QU Wei, PhD, professor, PhD supervisor, majors in geodetic inversion of crustal deformation, geological disaster high-precision geodetic monitoring and disaster mechanism, E-mail: maikerqq@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=1zfnXz7fHie3SEN+TsWJMQ==, magXml=twEhLqz4gD35UO55Enm3Sg==, pdfUrl=null, pdf=iiLZhFOH7KWbkIb3erDw3w==, pdfFileSize=19520199, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=oQN5P45ED1DTHc4BIK2gXg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=8qDtlWDgOw4HmEcOopKVpA==, mapNumber=null, fund=null)}, authors=[Author(id=1322506555589767818, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2022126014@chd.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322506555677848204, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, authorId=1322506555589767818, language=EN, stringName=Cheng WANG, firstName=Cheng, middleName=null, lastName=WANG, 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":"
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Remote Sensing,
2019,
11 (22), articleTitle=Adaptive Least-Squares Collocation Algorithm Considering Distance Scale Factor for GPS Crustal Velocity Field Fitting and Estimation, refAbstract=null), Reference(id=1322506566708867827, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=15, rfOrder=24, authorNames=null, journalName=null, refType=null, unstructuredReference=任雅奇. 基于GPS数据的中国地壳运动速度场模型的建立[D]. 郑州: 信息工程大学, 2012, articleTitle=null, refAbstract=null), Reference(id=1322506566809531124, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=15, rfOrder=25, authorNames=null, journalName=null, refType=null, unstructuredReference=Ren Yaqi. Establishment of Chinese Crustal Movement Velocity Model Based on the GPS Data[D]. Zhengzhou: Information Engineering University, 2012, articleTitle=null, refAbstract=null)], funds=[Fund(id=1322506562057384659, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, awardId=42174006, language=EN, fundingSource=National Natural Science Foundation of China(42174006), fundOrder=null, country=null), Fund(id=1322506562137076436, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, awardId=42174006, language=CN, fundingSource=国家自然科学基金(42174006), fundOrder=null, country=null), Fund(id=1322506562216768213, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, awardId=2022JC-18, language=EN, fundingSource=Science Fund for Distinguished Young Scholars of Shaanxi Province(2022JC-18), fundOrder=null, country=null), Fund(id=1322506562292265686, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, awardId=2022JC-18, language=CN, fundingSource=陕西省杰出青年科学基金(2022JC-18), fundOrder=null, country=null), Fund(id=1322506562359374551, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, awardId=300102263201, language=EN, fundingSource=Fundamental Research Funds for the Central Universities, CHD(300102263201), fundOrder=null, country=null), Fund(id=1322506562439066328, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, awardId=300102263201, language=CN, fundingSource=长安大学中央高校基本科研业务费专项(300102263201), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1322506554134344323, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, xref=null, ext=[AuthorCompanyExt(id=1322506554138538628, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, companyId=1322506554134344323, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 School of Geological Engineering and Geomatics, Chang'an University, 126 Yanta Road, Xi'an 710054, China), AuthorCompanyExt(id=1322506554151121541, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, companyId=1322506554134344323, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 长安大学地质工程与测绘学院, 西安市雁塔路126号, 710054)]), AuthorCompany(id=1322506555472327302, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, xref=null, ext=[AuthorCompanyExt(id=1322506555484910215, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, companyId=1322506555472327302, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 Key Laboratory of Western China's Mineral Resources and Geological Engineering, Ministry of Education, 126 Yanta Road, Xi'an 710054, China), AuthorCompanyExt(id=1322506555497493128, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, companyId=1322506555472327302, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 西部矿产资源与地质工程教育部重点实验室, 西安市雁塔路126号, 710054)])], figs=[ArticleFig(id=1322506557833720498, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 1, caption=
Flow chart of KLSC algorithm, figureFileSmall=Nm5qrmLB8ULqgbjD6qaIIQ==, figureFileBig=oQN5P45ED1DTHc4BIK2gXg==, tableContent=null), ArticleFig(id=1322506557900829363, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图1, caption=
KLSC算法流程, figureFileSmall=Nm5qrmLB8ULqgbjD6qaIIQ==, figureFileBig=oQN5P45ED1DTHc4BIK2gXg==, tableContent=null), ArticleFig(id=1322506558089573044, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 2, caption=
GNSS crustal movement observation velocity field in the Qinghai-Xizang plateau region, figureFileSmall=nOt3lCxPhg73tOLvCjiB5w==, figureFileBig=GlAsPcJZjGMc8byQiIYKHg==, tableContent=null), ArticleFig(id=1322506558148293301, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图2, caption=
青藏高原区域GNSS地壳运动观测速度场, figureFileSmall=nOt3lCxPhg73tOLvCjiB5w==, figureFileBig=GlAsPcJZjGMc8byQiIYKHg==, tableContent=null), ArticleFig(id=1322506558232179382, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 3, caption=
Relationship between the number of clusters and each clustering index before and after normalization of original data, figureFileSmall=4xq8HwyNEGiF6nwvGnYoPA==, figureFileBig=doTnHdIX9HobNBklQCoP/Q==, tableContent=null), ArticleFig(id=1322506559486276279, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图3, caption=
原始数据归一化前后聚类数目与各聚类指标的关系, figureFileSmall=4xq8HwyNEGiF6nwvGnYoPA==, figureFileBig=doTnHdIX9HobNBklQCoP/Q==, tableContent=null), ArticleFig(id=1322506559578550968, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 4, caption=
Velocity field clustering results based on KLSC algorithm, figureFileSmall=w4Aka2CDZEMx3uxnbHL0Hg==, figureFileBig=wdn4hB6IBp7xVGRa8RxExw==, tableContent=null), ArticleFig(id=1322506559821820601, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图4, caption=
基于KLSC算法的速度场聚类结果, figureFileSmall=w4Aka2CDZEMx3uxnbHL0Hg==, figureFileBig=wdn4hB6IBp7xVGRa8RxExw==, tableContent=null), ArticleFig(id=1322506559935066810, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 5, caption=
Indexes distribution of 100 times clustering method, figureFileSmall=h2BTNjjIfvDfF+H6BuM46g==, figureFileBig=YRTdf76h13K+l9lNydJ9Fg==, tableContent=null), ArticleFig(id=1322506560220279483, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图5, caption=
100次聚类方法指标分布, figureFileSmall=h2BTNjjIfvDfF+H6BuM46g==, figureFileBig=YRTdf76h13K+l9lNydJ9Fg==, tableContent=null), ArticleFig(id=1322506560283194044, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 6, caption=
Observed, simulated and residual velocityfields based on TLSC and KLSC algorithms, figureFileSmall=7J0sKRuZyvyh3BpzPTmbTg==, figureFileBig=dYC/L9pTdod7mr+hy56SdQ==, tableContent=null), ArticleFig(id=1322506560354497213, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图6, caption=
基于TLSC与KLSC算法的研究区域观测、模拟与残差速度场, figureFileSmall=7J0sKRuZyvyh3BpzPTmbTg==, figureFileBig=dYC/L9pTdod7mr+hy56SdQ==, tableContent=null), ArticleFig(id=1322506560417411774, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 7, caption=
Comparison of RMSE of fitted points andcheck points of TLSC and KLSC algorithms, figureFileSmall=Dx7uwiaF6cyxus0iPWqUkQ==, figureFileBig=hDwHZ836fCXRssY8APB1GA==, tableContent=null), ArticleFig(id=1322506560492909247, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图7, caption=
TLSC与KLSC算法拟合点和检核点RMSE对比, figureFileSmall=Dx7uwiaF6cyxus0iPWqUkQ==, figureFileBig=hDwHZ836fCXRssY8APB1GA==, tableContent=null), ArticleFig(id=1322506560564212416, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 8, caption=
Residuals distribution and frequency distribution histograms of TLSC and KLSC algorithms, figureFileSmall=wTTxgIl5SErKGpSrhhA5uQ==, figureFileBig=kg9ZGLDvErxEqEWEuz9cHg==, tableContent=null), ArticleFig(id=1322506560639709889, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图8, caption=
TLSC与KLSC算法残差分布与频率分布直方图, figureFileSmall=wTTxgIl5SErKGpSrhhA5uQ==, figureFileBig=kg9ZGLDvErxEqEWEuz9cHg==, tableContent=null), ArticleFig(id=1322506560711013058, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 9, caption=
Variations of total residuals of fitting points and check points of 100 times clustering methodafter repeating the experiment 50 times, figureFileSmall=kJTGJZx/0FB9vjfT2gLihg==, figureFileBig=bwPLnO+GNcOfHWi9j1Ab/g==, tableContent=null), ArticleFig(id=1322506560773927619, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图9, caption=
重复实验50次100次聚类方法拟合点与检核点总残差变化, figureFileSmall=kJTGJZx/0FB9vjfT2gLihg==, figureFileBig=bwPLnO+GNcOfHWi9j1Ab/g==, tableContent=null), ArticleFig(id=1322506560845230788, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 10, caption=
The crustal continuous velocity field interpolated at intervals of 1° based on the TLSC algorithm, figureFileSmall=wHQTmbF58Nv5Sgc91FTKww==, figureFileBig=4cKP9CFgeTzmgULZEJcmpA==, tableContent=null), ArticleFig(id=1322506560920728261, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图10, caption=
基于TLSC算法插值的间隔1°的地壳连续速度场及其分量, figureFileSmall=wHQTmbF58Nv5Sgc91FTKww==, figureFileBig=4cKP9CFgeTzmgULZEJcmpA==, tableContent=null), ArticleFig(id=1322506561013002950, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 11, caption=
The crustal continuous velocity field interpolated at intervals of 1° based on the KLSC algorithm, figureFileSmall=0WIxY/W1fi4UA/jaZgwSoQ==, figureFileBig=AF4h9B8pMLSo5OsDqT29eA==, tableContent=null), ArticleFig(id=1322506561105277639, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图11, caption=
基于KLSC算法插值的间隔1°的地壳连续速度场, figureFileSmall=0WIxY/W1fi4UA/jaZgwSoQ==, figureFileBig=AF4h9B8pMLSo5OsDqT29eA==, tableContent=null), ArticleFig(id=1322506561184969416, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Fig. 12, caption=
The crustal continuous velocity field components interpolated at intervals of 1° based on KLSC algorithm, figureFileSmall=69zKndLRIFB67Kfc4+lS1w==, figureFileBig=SH9TpPLTNBI13pgX3dL5Lg==, tableContent=null), ArticleFig(id=1322506561252078281, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=图12, caption=
基于KLSC算法插值的间隔1°的地壳连续速度场分量, figureFileSmall=69zKndLRIFB67Kfc4+lS1w==, figureFileBig=SH9TpPLTNBI13pgX3dL5Lg==, tableContent=null), ArticleFig(id=1322506561319187146, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Tab. 1, caption=
Characteristics of the original data
, figureFileSmall=null, figureFileBig=null, tableContent=
| 经度/(°) | 纬度/(°) | 速度东向分量/mm·a-1 | 速度北向分量/mm·a-1 |
| 特征范围 | 31.905 | 13.953 | 33.160 | 60.820 |
| 特征标准差 | 10.290 | 4.274 | 6.157 | 17.644 |
), ArticleFig(id=1322506561491153611, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=表1, caption=
原始数据特征
, figureFileSmall=null, figureFileBig=null, tableContent=
| 经度/(°) | 纬度/(°) | 速度东向分量/mm·a-1 | 速度北向分量/mm·a-1 |
| 特征范围 | 31.905 | 13.953 | 33.160 | 60.820 |
| 特征标准差 | 10.290 | 4.274 | 6.157 | 17.644 |
), ArticleFig(id=1322506561570845388, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Tab. 2, caption=
The RMSE and correlation coefficient of fitted points and check points based onTLSC and KLSC algorithms
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 拟合点RMSE /mm·a-1 | | 检核点RMSE /mm·a-1 | | 相关系数R |
| 东向 | 北向 | 东向 | 北向 | 东向 | 北向 |
| TLSC | 3.75 | 5.86 | | 4.07 | 6.20 | | 0.730 | 0.945 |
| KLSC(K=5) | 2.36 | 1.91 | 2.11 | 2.11 | 0.906 | 0.994 |
| KLSC(K=6) | 2.29 | 2.66 | 2.17 | 3.01 | 0.909 | 0.989 |
| KLSC(K=9) | 2.21 | 2.09 | 2.14 | 2.48 | 0.918 | 0.993 |
), ArticleFig(id=1322506561646342861, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=表2, caption=
基于TLSC和KLSC算法的拟合点和检核点的RMSE和相关系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 拟合点RMSE /mm·a-1 | | 检核点RMSE /mm·a-1 | | 相关系数R |
| 东向 | 北向 | 东向 | 北向 | 东向 | 北向 |
| TLSC | 3.75 | 5.86 | | 4.07 | 6.20 | | 0.730 | 0.945 |
| KLSC(K=5) | 2.36 | 1.91 | 2.11 | 2.11 | 0.906 | 0.994 |
| KLSC(K=6) | 2.29 | 2.66 | 2.17 | 3.01 | 0.909 | 0.989 |
| KLSC(K=9) | 2.21 | 2.09 | 2.14 | 2.48 | 0.918 | 0.993 |
), ArticleFig(id=1322506561721840334, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Tab. 3, caption=
The t-test results of the residuals of fitting points and check points based on TLSC and KLSC algorithms
, figureFileSmall=null, figureFileBig=null, tableContent=
| 数据 | 算法 | 拟合点残差t值 | | 拟合点残差P值 | | 检核点残差t值 | | 检核点残差P值 |
| 东向 | 北向 | 东向 | 北向 | 东向 | 北向 | 东向 | 北向 |
| 原始残差 | TLSC | -2.600 | -2.815 | | 0.010 | 0.005 | | -0.977 | -1.835 | | 0.333 | 0.072 |
| KLSC(K=5) | -2.752 | -1.608 | 0.006 | 0.109 | -1.412 | -0.423 | 0.163 | 0.674 |
| KLSC(K=6) | -2.652 | -0.711 | 0.008 | 0.478 | -1.566 | -0.008 | 0.123 | 0.994 |
| KLSC(K=9) | -3.062 | -0.590 | 0.002 | 0.556 | -1.637 | -0.357 | 0.107 | 0.722 |
| 去除极值后数据 | TLSC | -2.477 | -2.698 | 0.014 | 0.007 | -0.696 | -1.564 | 0.489 | 0.123 |
| KLSC(K=5) | -2.583 | -1.479 | 0.010 | 0.140 | -1.109 | -0.110 | 0.272 | 0.913 |
| KLSC(K=6) | -2.509 | -0.572 | 0.012 | 0.568 | -1.258 | 0.341 | 0.214 | 0.735 |
| KLSC(K=9) | -2.922 | -2.922 | 0.004 | 0.661 | -1.336 | 0.035 | 0.187 | 0.973 |
), ArticleFig(id=1322506561809920719, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=表3, caption=
基于TLSC与KLSC算法的拟合点和检核点残差t检验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 数据 | 算法 | 拟合点残差t值 | | 拟合点残差P值 | | 检核点残差t值 | | 检核点残差P值 |
| 东向 | 北向 | 东向 | 北向 | 东向 | 北向 | 东向 | 北向 |
| 原始残差 | TLSC | -2.600 | -2.815 | | 0.010 | 0.005 | | -0.977 | -1.835 | | 0.333 | 0.072 |
| KLSC(K=5) | -2.752 | -1.608 | 0.006 | 0.109 | -1.412 | -0.423 | 0.163 | 0.674 |
| KLSC(K=6) | -2.652 | -0.711 | 0.008 | 0.478 | -1.566 | -0.008 | 0.123 | 0.994 |
| KLSC(K=9) | -3.062 | -0.590 | 0.002 | 0.556 | -1.637 | -0.357 | 0.107 | 0.722 |
| 去除极值后数据 | TLSC | -2.477 | -2.698 | 0.014 | 0.007 | -0.696 | -1.564 | 0.489 | 0.123 |
| KLSC(K=5) | -2.583 | -1.479 | 0.010 | 0.140 | -1.109 | -0.110 | 0.272 | 0.913 |
| KLSC(K=6) | -2.509 | -0.572 | 0.012 | 0.568 | -1.258 | 0.341 | 0.214 | 0.735 |
| KLSC(K=9) | -2.922 | -2.922 | 0.004 | 0.661 | -1.336 | 0.035 | 0.187 | 0.973 |
), ArticleFig(id=1322506561872835281, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=EN, label=Tab. 4, caption=
Indices of each filtering results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 滤波方法 | 滤波前后MSE /mm·a-1 | | 滤波后速度场(梯度平方和)/a-2 |
| 东向 | 北向 | 东向 | 北向 |
| 均值滤波 | 4.253 | 7.079 | | 5.329 | 2.947 |
| 高斯滤波 | 5.945 | 9.004 | 4.618 | 2.210 |
| 中值滤波 | 1.859 | 6.312 | 7.614 | 4.180 |
| 双边滤波 | 0.011 | 0.015 | 11.072 | 12.382 |
| 核密度估计法滤波 | 0.037 | 0.083 | 11.170 | 12.309 |
), ArticleFig(id=1322506561944138450, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506548962767464, language=CN, label=表4, caption=
各滤波结果指标
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| 滤波方法 | 滤波前后MSE /mm·a-1 | | 滤波后速度场(梯度平方和)/a-2 |
| 东向 | 北向 | 东向 | 北向 |
| 均值滤波 | 4.253 | 7.079 | | 5.329 | 2.947 |
| 高斯滤波 | 5.945 | 9.004 | 4.618 | 2.210 |
| 中值滤波 | 1.859 | 6.312 | 7.614 | 4.180 |
| 双边滤波 | 0.011 | 0.015 | 11.072 | 12.382 |
| 核密度估计法滤波 | 0.037 | 0.083 | 11.170 | 12.309 |
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