一种适用于CGCS2000坐标框架的多源数据融合方法
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摘要
针对单一的GPS技术并不能准确地确定地球质心,无法真正地实现地心坐标参考框架,为了满足CGCS2000坐标框架对高精度地球质心和高精度尺度基准的需求,未来的CGCS2000坐标框架将是多源空间大地测量技术融合的组合框架,该文提出了一种适用于CGCS2000坐标框架,并基于GPS、VLBI、SLR等大地测量技术的数据融合方法,利用该方法进行多源大地测量观测数据融合得到组合坐标框架,将得到的结果与ITRF综合解进行比较。结果表明:GPS、VLBI、SLR测站各方向坐标平均误差值约20mm,速度场各方向平均误差约1mm/a,水平方向速度场误差小于垂直方向速度场误差,误差较大的测站多居于板块分界带及其边缘。基于实验结果表明,该方法可以满足CGCS2000坐标框架对多源数据融合的要求。
At present,the implementation of CGCS2000 coordinate framework is mainly based on GPS technology.However,the single GPS technology cannot accurately determine the mass center of the earth and cannot realize the real geocentric coordinate frame reference.In order to meet the needs of highprecision the earth mass center and measurement datum of scale parameter,the future CGCS2000 coordinate framework will be a composed framework basing on multi-source space geodetic technology fusion.This paper suggests a kind multi-source geodesy technology fusion method with GPS/VLBI/SLR data,applicable to CGCS2000 coordinate frame,applying this method to form composed coordinate frame,and the results compared with ITRF comprehensive solution.The results show that the average coordinate error of each direction of GPS,VLBI,SLR stations is about 20 mm;the average velocity error of each direction of GPS,VLBI,SLR stations is less than 1 mm/a,the error of horizontal velocity field is generally less than the error of vertical velocity field,The larger error station is located in the plate boundary and its neighborhoods.Experimental results show that the method can meet the need of multisource data fusion for CGCS2000 coordinate framework.
At present,the implementation of CGCS2000 coordinate framework is mainly based on GPS technology.However,the single GPS technology cannot accurately determine the mass center of the earth and cannot realize the real geocentric coordinate frame reference.In order to meet the needs of highprecision the earth mass center and measurement datum of scale parameter,the future CGCS2000 coordinate framework will be a composed framework basing on multi-source space geodetic technology fusion.This paper suggests a kind multi-source geodesy technology fusion method with GPS/VLBI/SLR data,applicable to CGCS2000 coordinate frame,applying this method to form composed coordinate frame,and the results compared with ITRF comprehensive solution.The results show that the average coordinate error of each direction of GPS,VLBI,SLR stations is about 20 mm;the average velocity error of each direction of GPS,VLBI,SLR stations is less than 1 mm/a,the error of horizontal velocity field is generally less than the error of vertical velocity field,The larger error station is located in the plate boundary and its neighborhoods.Experimental results show that the method can meet the need of multisource data fusion for CGCS2000 coordinate framework.
引文
[1]AlTAMIMI Z,SILLARD P,BOUCHER C.ITRF2000:a new release of the International Terrestrial ReferenceFrame for earth science applications[J].Journal ofGeophysical Research Solid Earth,2002,107(B10):ETG 2-1-ETG 2-19.
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[3]AlTAMIMI Z,COLLOLOEUX X,MTIVIER L.ITRF2008:an improved solution of the internationalterrestrial reference frame[J].Journal of Geodesy,2011,85(8):457-473.
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[8]马下平,师芸.陆态网络并址站归心基线对ITRF2008的影响[J].大地测量与地球动力学,2017,37(6):618-622.(MA Xiaping,SHI Yun.Effect of local tie vectorsin CMONOC of co-located sites on ITRF2008[J].Journal ofGeodesy and Geodynamics,2017,37(6):618-622.)
[9]GONG X,SHEN Y,WANG J,et al.Surveying colocatedGNSS,VLBI,and SLR stations in China[J].Journal ofSurveying Engineering,2013,140(1):28-34.
[10]王鹏.法方程层面地球参考框架数据融合及其网格计算应用研究[D].郑州:信息工程大学,2010.(WANG Peng.Research on the data fusing of terrestrialreference frame at normal equation level and its applicationin grid computing[D].Zhengzhou:Information EngineeringUniversity,2010.)
[11]刘立,成英燕,高乐.GPS、SLR、VLBI联合处理站坐标[J].测绘信息与工程,2010,35(4):3-4.(LIU Li,CHENG Yingyan,GAO Le.Combination adjustment ofGPS,SLR and VLBI data[J]Journal of Geomatics,2010,35(4):3-4.)
[12]张西光.地球参考框架的理论与方法[D].郑州:信息工程大学,2009.(ZHANG Xiguang.Theory andalgorithms of terrestrial reference frame[D].Zheng-zhou:Information Engineering University,2009.)
[13]邹容.地球参考框架建立和维持的关键技术研究[D].武汉:武汉大学,2009.(ZOU Rong.The research ofkey technology on the realization and maintenance ofTRF[D].Wuhan:Wuhan University,2009.)
[14]Tomas Soler and John Marshall.Rigorous transforma-tion of variance-covariance matrices of GPS-derivedcoordinates and velocities[J].GPS Solution,2002,6:76-90.
[15]GERARD P,BRIAN L.IERS conventions(2010)[EB/OL].[2018-09-09].https://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn36.html.
[16]崔希璋.广义测量平差[M].2版.武汉:武汉大学出版社,2012.(CUI Xizhang.Generalized measurementadjustment[M].2nd,ed.Wuhan:Wuhan UniversityPress,2012.)
[17]刘国林.近代测量平差理论与方法[M].徐州:中国矿业大学,2012.(LIU Guolin.Modern surveying adjustmenttheory and method[M].Xuzhou:China University ofMining and Technology,2012.)
[18]徐天河.VLBI、SLR、GPS综合数据处理与坐标转换若干问题研究[D].郑州:信息工程大学,2009.(XU Tianhe.Several problems of VLBI,SLR,GPS integrated dataprocessing and coordinate transformation[D].Zhengzhou:Information Engineering University,2009.)
[19]BIRD P.An updated digital model of plate boundaries[J].An Electronic Journal of the Earth Sciences,2003,4(3):1027.
[2]AlTAMIMI Z,COLLOLOEUX X,LEGRAND J,et al.ITRF2005:a new release of the International TerrestrialReference Frame based on time series of stationpositions and Earth Orientation Parameters[J].Journalof Geophysical Research Solid Earth,2007,112(B9):83-104.
[3]AlTAMIMI Z,COLLOLOEUX X,MTIVIER L.ITRF2008:an improved solution of the internationalterrestrial reference frame[J].Journal of Geodesy,2011,85(8):457-473.
[4]朱文耀,熊福文,宋淑丽.ITRF2005简介和评析[J].天文学进展,2008,26(1):1-14.(ZHU Wenyao,XIONGFuwen,SONG Shuli.Notes and commentary on theITRF2005[J].Progress in Astronomy,2008,26(1):1-14.)
[5]成英燕.ITRF2008框架简介[J].大地测量与地球动力学,2012,32(1):47-50.(CHENG Yingyan.Brief intro-duction of ITRF2008frame[J].Journal of Geodesyand Geodynamics,2012,32(1):47-50.)
[6]AlTAMIMI Z,REBISCHUNG P,MTIVIER L,et al.ITRF2014:a new release of the International TerrestrialReference Frame modeling non-linear station motions[J].Journal of Geophysical Research Solid Earth,2016,121(8):6109-6131.
[7]程鹏飞,成英燕,秘金钟,等.2000国家大地坐标系建设的理论与方法[M].北京:测绘出版社,2014.(CHENG Pengfei,CHENG Yingyan,BEI Jinzhong,et al.Theory and method for establishment of the Chinageodetic coordinate system 2000[J].Beijing:Surveyingand Mapping Press,2014.)
[8]马下平,师芸.陆态网络并址站归心基线对ITRF2008的影响[J].大地测量与地球动力学,2017,37(6):618-622.(MA Xiaping,SHI Yun.Effect of local tie vectorsin CMONOC of co-located sites on ITRF2008[J].Journal ofGeodesy and Geodynamics,2017,37(6):618-622.)
[9]GONG X,SHEN Y,WANG J,et al.Surveying colocatedGNSS,VLBI,and SLR stations in China[J].Journal ofSurveying Engineering,2013,140(1):28-34.
[10]王鹏.法方程层面地球参考框架数据融合及其网格计算应用研究[D].郑州:信息工程大学,2010.(WANG Peng.Research on the data fusing of terrestrialreference frame at normal equation level and its applicationin grid computing[D].Zhengzhou:Information EngineeringUniversity,2010.)
[11]刘立,成英燕,高乐.GPS、SLR、VLBI联合处理站坐标[J].测绘信息与工程,2010,35(4):3-4.(LIU Li,CHENG Yingyan,GAO Le.Combination adjustment ofGPS,SLR and VLBI data[J]Journal of Geomatics,2010,35(4):3-4.)
[12]张西光.地球参考框架的理论与方法[D].郑州:信息工程大学,2009.(ZHANG Xiguang.Theory andalgorithms of terrestrial reference frame[D].Zheng-zhou:Information Engineering University,2009.)
[13]邹容.地球参考框架建立和维持的关键技术研究[D].武汉:武汉大学,2009.(ZOU Rong.The research ofkey technology on the realization and maintenance ofTRF[D].Wuhan:Wuhan University,2009.)
[14]Tomas Soler and John Marshall.Rigorous transforma-tion of variance-covariance matrices of GPS-derivedcoordinates and velocities[J].GPS Solution,2002,6:76-90.
[15]GERARD P,BRIAN L.IERS conventions(2010)[EB/OL].[2018-09-09].https://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn36.html.
[16]崔希璋.广义测量平差[M].2版.武汉:武汉大学出版社,2012.(CUI Xizhang.Generalized measurementadjustment[M].2nd,ed.Wuhan:Wuhan UniversityPress,2012.)
[17]刘国林.近代测量平差理论与方法[M].徐州:中国矿业大学,2012.(LIU Guolin.Modern surveying adjustmenttheory and method[M].Xuzhou:China University ofMining and Technology,2012.)
[18]徐天河.VLBI、SLR、GPS综合数据处理与坐标转换若干问题研究[D].郑州:信息工程大学,2009.(XU Tianhe.Several problems of VLBI,SLR,GPS integrated dataprocessing and coordinate transformation[D].Zhengzhou:Information Engineering University,2009.)
[19]BIRD P.An updated digital model of plate boundaries[J].An Electronic Journal of the Earth Sciences,2003,4(3):1027.