Article(id=1224798729786511893, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224798727609663509, articleNumber=null, orderNo=null, doi=10.12284/hyxb2022139, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1631289600000, receivedDateStr=2021-09-11, revisedDate=1655740800000, revisedDateStr=2022-06-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1769944372841, onlineDateStr=2026-02-01, pubDate=1667232000000, pubDateStr=2022-11-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769944372841, onlineIssueDateStr=2026-02-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769944372841, creator=13701087609, updateTime=1769944372841, updator=13701087609, issue=Issue{id=1224798727609663509, tenantId=1146029695717560320, journalId=1149651085930835976, year='2022', volume='44', issue='11', pageStart='1', pageEnd='190', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769944372322, creator=13701087609, updateTime=1769996107149, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1225015719264403523, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224798727609663509, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1225015719264403524, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224798727609663509, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=170, endPage=178, ext={EN=ArticleExt(id=1224798731380347423, articleId=1224798729786511893, tenantId=1146029695717560320, journalId=1149651085930835976, language=EN, title=GNSS-R sea level height estimation model based on the combination of VMD and WinLSP, columnId=1194652705852465724, journalTitle=Haiyang Xuebao, columnName=Article, runingTitle=null, highlight=null, articleAbstract=
Global navigation satellite system-reflectometry (GNSS-R) technology is an emerging technology for monitoring sea level changes. Based on the principle of the signal to noise ratio (SNR) analysis method in GNSS-R technology, this paper established a new sea level height estimation model to improve the accuracy by analyzing the process of separating the trend term and extracting the oscillation frequency. Aiming at the problem of poor signal separation in the traditional model, this paper proposed to use the variational mode decomposition (VMD) algorithm to replace the traditional least squares fitting (LSF) to separate the trend term components. On this basis, this paper combined Lomb-Scargle Periodogram (LSP) spectral analysis method and Kaiser window function (referred to as WinLSP) to reduce the inversion error caused by spectral leakage. The results of sea level inversion experiments carried out at GTGU Station in Onsala, Sweden and SC02 Station in Alaska, USA show that the estimation model established in this paper has higher inversion accuracy than traditional model. The root mean square error (RMSE), correlation coefficient and number of inversion points of the inversion results of GTGU Station based on the VMD+WinLSP estimation model are 4.70 cm, 0.98 and 5 647, respectively. The inversion accuracy and GNSS data utilization are increased by about 29.7% and 15.0%, respectively; The RMSE, correlation coefficient, and inversion points of SC02 Station are14.34 cm, 0.99 and 1 785, respectively, and the inversion accuracy and GNSS data utilization are increased by about 12.3 % and 9.4%.
, correspAuthors=Wei Liu, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2022 Pratacultural Science. All rights reserved., 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, authorCompany=null, fund=null, authors=null, authorsList=Yuan Hu, Xintai Yuan, Wei Liu, Qingsong Hu, Zhihao Jiang, Licheng Zhong), CN=ArticleExt(id=1224798733687214699, articleId=1224798729786511893, tenantId=1146029695717560320, journalId=1149651085930835976, language=CN, title=基于VMD和WinLSP相结合的GNSS-R海平面高度估测模型, columnId=1149698756456657529, journalTitle=海洋学报, columnName=论文, runingTitle=null, highlight=null, articleAbstract=
全球导航卫星系统反射(Global Navigation Satellite System-Reflectometry,GNSS-R)技术是一种新兴的监测海平面高度变化的技术。本文依据GNSS-R技术中的信噪比分析法的原理,通过分析其分离趋势项和提取振荡频率的过程,建立了新的估测模型以提高反演精度。针对传统模型存在的信号分离不佳的问题,本文提出使用变分模态分解(Variational Mode Decomposition,VMD)算法替换传统的最小二乘拟合法(Least Squares Fitting, LSF)进行趋势项分量的分离。在此基础上,本文引入基于凯塞窗函数改进的LSP(Lomb-Scargle Periodogram)频谱分析法(记为WinLSP)来减弱因频谱泄露带来的反演误差。在瑞典翁萨拉的GTGU站和美国阿拉斯加州的SC02站开展的海平面高度反演实验结果表明,本文建立的估测模型相比于传统模型具有更高的反演精度。基于VMD+WinLSP估测模型得到的GTGU站反演结果的均方根误差(RMSE)、相关系数和反演点数分别为4.70 cm、0.98和5 647。与传统的LSF+LSP估测模型相比,反演精度和GNSS数据利用率分别提高了约29.7%和15.0%。SC02站的RMSE、相关系数和反演点数分别为14.34 cm、0.99和1 785,反演精度和GNSS数据利用率分别提高了约12.3%和9.4%。
, correspAuthors=刘卫, authorNote=null, correspAuthorsNote=
, copyrightStatement=版权所有©《海洋学报》编辑部 2022
胡媛,袁鑫泰,刘卫,等. 基于VMD和WinLSP相结合的GNSS-R海平面高度估测模型[J]. 海洋学报,2022,44(11):170–178Hu Yuan,Yuan Xintai,Liu Wei, et al. GNSS-R sea level height estimation model based on the combination of VMD and WinLSP[J]. Haiyang Xuebao,2022, 44(11):170–178
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胡媛(1981-),女,江西省萍乡市人,博士,副教授,主要从事海洋遥感和GNSS应用技术研究。E-mail:y-hu@shou.edu.cn
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胡媛(1981-),女,江西省萍乡市人,博士,副教授,主要从事海洋遥感和GNSS应用技术研究。E-mail:y-hu@shou.edu.cn
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Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China), AuthorCompanyExt(id=1225369389734740452, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, companyId=1225369389717963235, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.上海海事大学 商船学院,上海 201306)])], figs=[ArticleFig(id=1225369394176508579, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 1, caption=
Global navigation satellite systems-reflectometry (GNSS-R) sea level height estimation model geometric relationship diagram, figureFileSmall=+gECmBuTts3p2jl8z0tUVA==, figureFileBig=ddKsDYpUyp3ikRnzu71nAg==, tableContent=null), ArticleFig(id=1225369394252006053, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图1, caption=
全球导航卫星系统反射(GNSS-R)海平面高度估测模型几何关系图, figureFileSmall=+gECmBuTts3p2jl8z0tUVA==, figureFileBig=ddKsDYpUyp3ikRnzu71nAg==, tableContent=null), ArticleFig(id=1225369394356863659, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 2, caption=
Composition of the intrinsic mode function (IMF) component of the signal-to-noise ratio (SNR) data, from top to bottom, followed by IMF components (from high frequency to low frequency), residual and original SNR (red line), figureFileSmall=TVn5B3GUx1LZWL/fZaedPA==, figureFileBig=L70vhJvDs3dZjpdBvP4hEQ==, tableContent=null), ArticleFig(id=1225369394444944048, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图2, caption=
信噪比(SNR)数据的本征模态函数(IMF)分量的组成,从上到下,依次是IMF分量(频率从高到低)、残差和原始SNR数据(红线), figureFileSmall=TVn5B3GUx1LZWL/fZaedPA==, figureFileBig=L70vhJvDs3dZjpdBvP4hEQ==, tableContent=null), ArticleFig(id=1225369394553995954, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 3, caption=
Environment and location of GTGU station, figureFileSmall=Hdr42ud43u0IBuHwatCyVQ==, figureFileBig=FSJ/E4e80JCtkAcp3hP6fw==, tableContent=null), ArticleFig(id=1225369394658853557, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图3, caption=
GTGU站的环境和位置, figureFileSmall=Hdr42ud43u0IBuHwatCyVQ==, figureFileBig=FSJ/E4e80JCtkAcp3hP6fw==, tableContent=null), ArticleFig(id=1225369394835014334, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 4, caption=
Comparison of the trend term fitting effect The black curve represents the original signal to noise ratio (SNR) data, and the blue and red curves represent the trend terms fitted by the least squares fitting (LSF) method and the variational mode decomposition (VMD) algorithm, respectively
, figureFileSmall=mLXkcN4zo374wTl3zNj16Q==, figureFileBig=7eCLP/yzOCwxF8Jso+7lJw==, tableContent=null), ArticleFig(id=1225369394960843457, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图4, caption=
趋势项拟合效果对比 黑色曲线表示原始的信噪比(SNR)数据,蓝、红色曲线分别表示通过最小二乘拟合法(LSF)和变分模态分解算法(VMD)拟合得到的趋势项
, figureFileSmall=mLXkcN4zo374wTl3zNj16Q==, figureFileBig=7eCLP/yzOCwxF8Jso+7lJw==, tableContent=null), ArticleFig(id=1225369395044729541, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 5, caption=
Comparison of inversion results of GTGU Station based on different trend term fitting methods with tide gauge (a) and sea level height error (b), figureFileSmall=EILxYnXswpqNSEkfAara9A==, figureFileBig=wzzPkMNdX867gUNhKEbZPA==, tableContent=null), ArticleFig(id=1225369396365935306, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图5, caption=
GTGU站基于不同趋势项拟合方法的反演结果与验潮站数据的对比情况(a)以及海平面高度误差情况(b), figureFileSmall=EILxYnXswpqNSEkfAara9A==, figureFileBig=wzzPkMNdX867gUNhKEbZPA==, tableContent=null), ArticleFig(id=1225369396495958734, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 6, caption=
Comparison of inversion results based on lomb-scargle periodogram with window (WinLSP) of GTGU Station with tide gauge, figureFileSmall=0K1M9SGpCoLvcyFelutqWQ==, figureFileBig=eBzxd58PUNVRKhL+QzJ0EA==, tableContent=null), ArticleFig(id=1225369396621787855, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图6, caption=
GTGU站基于加窗的频谱分析(WinLSP)反演结果与验潮站数据的对比情况, figureFileSmall=0K1M9SGpCoLvcyFelutqWQ==, figureFileBig=eBzxd58PUNVRKhL+QzJ0EA==, tableContent=null), ArticleFig(id=1225369396735034069, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 7, caption=
Comparison of the inversion results of SC02 Station based on different trend term fitting methods with the tide gauge, figureFileSmall=DpoqO/2bEICK1+6lPxZG/w==, figureFileBig=bE0oRtNIUXv8r9vtq6bEkg==, tableContent=null), ArticleFig(id=1225369396839891672, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图7, caption=
SC02站基于不同趋势项拟合方法的反演结果与验潮站数据的对比情况, figureFileSmall=DpoqO/2bEICK1+6lPxZG/w==, figureFileBig=bE0oRtNIUXv8r9vtq6bEkg==, tableContent=null), ArticleFig(id=1225369396919583451, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Fig. 8, caption=
Comparison of inversion results based on Lomb-Scargle Periodogram with window (WinLSP) of SC02 Station with tide gauge, figureFileSmall=SWe7jf/JaLAvieZoFkv8Zw==, figureFileBig=GixApbEZxVxhU832tgVg4A==, tableContent=null), ArticleFig(id=1225369397024441053, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=图8, caption=
SC02站基于加窗的频谱分析的反演结果与验潮站数据的对比情况, figureFileSmall=SWe7jf/JaLAvieZoFkv8Zw==, figureFileBig=GixApbEZxVxhU832tgVg4A==, tableContent=null), ArticleFig(id=1225369397095744222, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Table 1, caption=
Inversion results of sea level height in different elevation angle ranges based on variational mode decomposition (VMD)
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| 仰角范围 | RMSE/cm | 相关系数 | 反演点数 |
| 5°~15° | 5.01 | 0.98 | 2 852 |
| 5°~25° | 5.18 | 0.98 | 4 545 |
| 5°~30° | 5.50 | 0.98 | 5 268 |
), ArticleFig(id=1225369397204796131, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=表1, caption=
基于变分模态分解(VMD)算法的不同仰角范围的海平面高度反演结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 仰角范围 | RMSE/cm | 相关系数 | 反演点数 |
| 5°~15° | 5.01 | 0.98 | 2 852 |
| 5°~25° | 5.18 | 0.98 | 4 545 |
| 5°~30° | 5.50 | 0.98 | 5 268 |
), ArticleFig(id=1225369397305459430, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Table 2, caption=
Accuracy comparison of sea level height inversion results of GTGU Station based on least squares fitting+lomb-scargle periodogram (LSF+LSP), empirical mode decomposition+lomb-scargle periodogram (EMD+LSP) and variational mode decomposition+lomb-scargle periodogram (VMD+LSP)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+LSP | 6.69 | 0.96 | 4 909 |
| EMD+LSP | 5.58 | 0.97 | 4 641 |
| VMD+LSP | 5.50 | 0.98 | 5 268 |
), ArticleFig(id=1225369397397734122, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=表2, caption=
基于最小二乘拟合+频谱分析(LSF+LSP)、经验模态分解+频谱分析(EMD+LSP)和变分模态分解+频谱分析(VMD+LSP)的GTGU站海平面高度反演结果的精度对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+LSP | 6.69 | 0.96 | 4 909 |
| EMD+LSP | 5.58 | 0.97 | 4 641 |
| VMD+LSP | 5.50 | 0.98 | 5 268 |
), ArticleFig(id=1225369397490008814, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Table 3, caption=
Accuracy comparison of sea level height inversion results of GTGU Station based on least squares fitting+lomb-scargle periodogram with window (LSF+WinLSP), empirical mode decomposition+lomb-scargle periodogram with window (EMD+WinLSP) and variational mode decomposition+lomb-scargle periodogram with window (VMD+WinLSP)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+WinLSP | 5.50 | 0.97 | 5 439 |
| EMD+WinLSP | 5.51 | 0.97 | 5 450 |
| VMD+WinLSP | 4.70 | 0.98 | 5 647 |
), ArticleFig(id=1225369397594866415, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=表3, caption=
基于最小二乘拟合+加窗的频谱分析(LSF+WinLSP)、经验模态分解+加窗的频谱分析(EMD+WinLSP)和变分模态分解+加窗的频谱分析(VMD+WinLSP)的GTGU站海平面高度反演结果的精度对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+WinLSP | 5.50 | 0.97 | 5 439 |
| EMD+WinLSP | 5.51 | 0.97 | 5 450 |
| VMD+WinLSP | 4.70 | 0.98 | 5 647 |
), ArticleFig(id=1225369397661975283, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Table 4, caption=
Accuracy comparison of sea level height inversion results of SC02 Station based on least squares fitting+lomb-scargle periodogram (LSF+LSP), empirical mode decomposition+lomb-scargle periodogram (EMD+LSP) and variational mode decomposition+lomb-scargle periodogram (VMD+LSP)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+LSP | 16.36 | 0.99 | 1 632 |
| EMD+LSP | 15.83 | 0.99 | 1 641 |
| VMD+LSP | 14.46 | 0.99 | 1 723 |
), ArticleFig(id=1225369397758444277, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=表4, caption=
基于最小二乘拟合+频谱分析(LSF+LSP)、经验模态分解+频谱分析(EMD+LSP)和变分模态分解+频谱分析(VMD+LSP)的SC02站海平面高度反演结果的精度对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+LSP | 16.36 | 0.99 | 1 632 |
| EMD+LSP | 15.83 | 0.99 | 1 641 |
| VMD+LSP | 14.46 | 0.99 | 1 723 |
), ArticleFig(id=1225369397926216440, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=EN, label=Table 5, caption=
Accuracy comparison of sea level height inversion results of SC02 Station based on least squares fitting+lomb-scargle periodogram with window (LSF+WinLSP), empirical mode decomposition+lomb-scargle periodogram with window (EMD+WinLSP) and variational mode decomposition+lomb-scargle periodogram with window (VMD+WinLSP)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+WinLSP | 15.45 | 0.99 | 1 696 |
| EMD+WinLSP | 15.44 | 0.99 | 1 725 |
| VMD+WinLSP | 14.34 | 0.99 | 1 785 |
), ArticleFig(id=1225369398043656956, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224798729786511893, language=CN, label=表5, caption=
基于最小二乘拟合+加窗的频谱分析(LSF+WinLSP)、经验模态分解+加窗的频谱分析(EMD+WinLSP)和变分模态分解+加窗的频谱分析(VMD+WinLSP)的SC02站海平面高度反演结果的精度对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | RMSE/cm | 相关系数 | 反演点数 |
| LSF+WinLSP | 15.45 | 0.99 | 1 696 |
| EMD+WinLSP | 15.44 | 0.99 | 1 725 |
| VMD+WinLSP | 14.34 | 0.99 | 1 785 |
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