多普勒系统对历元地球参考框架的影响研究
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摘要
针对历元地球参考框架在确定站点高频非线性运动和季节性变化方面具有国际地球参考框架不具备的优势问题,该文通过比较两种技术间组合策略建立的多源融合历元地球参考框架的精度,研究DORIS对于多源融合历元地球参考框架的影响。通过基于坐标的法方程叠加方法进行技术内法方程叠加和技术间组合,并利用并置站条件联系不同技术的法方程,从而建立多源融合历元地球参考框架。结果表明,DORIS的引入并不会对多源融合历元地球参考框架的基准定义或其他3种技术站点的点位精度产生较大的影响,同时能够体现4种技术中精度较差的DORIS对于ETRF的精度及稳定性的影响。
Aiming at the problem that the epoch terrestrial reference frame(ETRF)has its unique advantages on station's high frequency and non-linear motion compared to ITRF,by comparing the accuracy and stability of the multi-technique ETRF constructed by two kinds of inter-technique normal equations stacking strategies,this paper studied on the influence of DORIS to multi-technique ETRF.By means of the method of normal equations stacking on coordinate level,the intra-technique normal equations stacking and inter-technique normal equations stacking were carried out,using local ties to connect different normal equations,so as to construct the multi-technique ETRF.The result showed that DORIS did not have a significant influence on datum definition of the multi-technique ETRF or coordinate precision of other sites,it reflected the influence of DORIS,which had relatively poor precision in four techniques,on the accuracy and stability of ETRF.
Aiming at the problem that the epoch terrestrial reference frame(ETRF)has its unique advantages on station's high frequency and non-linear motion compared to ITRF,by comparing the accuracy and stability of the multi-technique ETRF constructed by two kinds of inter-technique normal equations stacking strategies,this paper studied on the influence of DORIS to multi-technique ETRF.By means of the method of normal equations stacking on coordinate level,the intra-technique normal equations stacking and inter-technique normal equations stacking were carried out,using local ties to connect different normal equations,so as to construct the multi-technique ETRF.The result showed that DORIS did not have a significant influence on datum definition of the multi-technique ETRF or coordinate precision of other sites,it reflected the influence of DORIS,which had relatively poor precision in four techniques,on the accuracy and stability of ETRF.
引文
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[9]BLOFELD M,SEITZ M,ANGERMANN D,et al.Quality assessment of IDS contribution to ITRF2014performed by DGFI-TUM[J].Advances in Space Research,2016,58(12):2505-2519.
[10]ALTAMIMI Z,REBISCHUNG P,MTIVIER L,et al.ITRF2014:a new release of the international terrestrial reference frame modeling nonlinear station motions[J].Journal of Geophysical Research Solid Earth,2016,121(8):6109-6131.
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[12]ALTAMIMI Z,SILLARD P,BOUCHER C.CATREFsoftware combination and analysis of terrestrial reference frames[Z].Lareg Technical,2006.
[13]姚宜斌.GPS精密定位定轨后处理算法与实现[D].武汉:武汉大学,2004.(YAO Yibin.Research on the algorithm and realization of post-processing for GPS precise positioning and orbit determination[D].Wuhan:Wuhan University,2004.)
[14]BHR H,ALTAMIMI Z,HECK B.Variance component estimation for combination of terrestrial reference frames[D].Karlsruher:Karlsruher Institut für Technologie,2007.
[2]李敏.空间大地测量数据融合理论与算法研究[D].西安:长安大学,2015.(LI Min.Research on the theories and algorithms of space geodesy data fusing[D].Xi’an:Chang’an University,2015.)
[3]邹蓉.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 of key technology on the realization and maintenance of TRF[D].Wuhan:Wuhan University,2009.)
[4]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 introduction of ITRF2008frame[J].Journal of Geodesy and Geodynamics,2012,32(1):47-50.)
[5]BLOFELD M,MLLER H,SEITZ M,et al.Benefits of SLR in epoch reference frames[C]//International Workshop on Laser Ranging.[S.l.:s.n.],2011.
[6]BLOFELD M,SEITZ M,ANGERMANN D.Epoch reference frames as short-term realizations of the ITRS[C]//International Association of Geodesy Symposia.Berlin:Springer,2015:27-32.
[7]ALTAMIMI Z,COLLILIEUX X.Quality assessment of the IDS contribution to ITRF2008[J].Advances in Space Research,2010,45(12):1500-1509.
[8]ANGERMANN D,SEITZ M,DREWES H.Analysis of the DORIS contributions to ITRF2008[J].Advances in Space Research,2010,46(12):1633-1647.
[9]BLOFELD M,SEITZ M,ANGERMANN D,et al.Quality assessment of IDS contribution to ITRF2014performed by DGFI-TUM[J].Advances in Space Research,2016,58(12):2505-2519.
[10]ALTAMIMI Z,REBISCHUNG P,MTIVIER L,et al.ITRF2014:a new release of the international terrestrial reference frame modeling nonlinear station motions[J].Journal of Geophysical Research Solid Earth,2016,121(8):6109-6131.
[11]LEMOINE F G,CHINN D S,ZELENSKY N P,et al.The development of the GSFC DORIS contribution to ITRF2014[J].Advances in Space Research,2016,58(12):2520-2542.
[12]ALTAMIMI Z,SILLARD P,BOUCHER C.CATREFsoftware combination and analysis of terrestrial reference frames[Z].Lareg Technical,2006.
[13]姚宜斌.GPS精密定位定轨后处理算法与实现[D].武汉:武汉大学,2004.(YAO Yibin.Research on the algorithm and realization of post-processing for GPS precise positioning and orbit determination[D].Wuhan:Wuhan University,2004.)
[14]BHR H,ALTAMIMI Z,HECK B.Variance component estimation for combination of terrestrial reference frames[D].Karlsruher:Karlsruher Institut für Technologie,2007.