ITRF中GNSS/SLR并址站归心基线的“一步解”

doi:10.11947/j.AGCS.2018.20170066

测绘学报 ›› 2018, Vol. 47 ›› Issue (1): 64-70.doi: 10.11947/j.AGCS.2018.20170066

ITRF中GNSS/SLR并址站归心基线的“一步解”

马下平

西安科技大学测绘科学与技术学院, 陕西西安 710054

收稿日期:2017-02-17 修回日期:2017-11-17 出版日期:2018-01-20 发布日期:2018-02-05
作者简介:马下平(1984-),男,博士生,讲师,研究方向为大地测量数据处理。E-mail:celiang0321@163.com
基金资助:
国家自然科学基金面上项目（46134017）；西安科技大学博士启动金（2016QDJ005）；西安科技大学培育基金（201714）

One Step Solution to the Local Tie Vectors of GNSS/SLR in ITRF

MA Xiaping

School of Geomatics, XI'An University of Science and Technology, Xi'An 710054, China

Received:2017-02-17 Revised:2017-11-17 Online:2018-01-20 Published:2018-02-05
Supported by:
The National Natural Science Foundation of China (No. 46134017);Startup Foundation for Doctors of Xi’An University of Science and Technology (No. 2016QDJ005);Xi’an University of Science and Technology Cultivation Fund (No. 201714)

摘要/Abstract

摘要： 提出将SLR望远镜的参考点和两轴偏差作为未知参数，在ITRF中联合并址站归心测量中GNSS基线网和地面网观测量（水平方向、垂直角和边长），建立SLR站观测设备的参考点与观测标志、观测标志之间、参考点和两轴偏差与其他未知参数之间的多种约束条件来求解归心基线的“一步解”。利用“一步解”解算出“陆态网络”中北京、昆明和西安3个GNSS/SLR并址站在ITRF2014中的归心基线及其协方差阵。结果显示：归心基线的中误差优于2 mm，与已有分步解相比，差值不超过2 mm；水平轴和垂直轴之间的偏差分别为3.8、0.7和3.6 mm，中误差分别为1.3、1.2和1.3 mm。

关键词: 归心基线, 一步解, GNSS/SLR, 约束条件

Abstract: This paper proposes a one-step solution of local tie vectors,the solution takes RP (Reference Point) and axes offsets of SLR telescope as unknown parameters,GNSS baselines network and conventional terrestrial observation (horizontal,vertical angle and distance) are combined in ITRF (International Terrestrial Reference Frame),and multiply constraint conditions are established between RP and observation marks and two axes offsets.Local tie vectors and related covariance matrices of the 3 co-located sites in Beijing,Kunming,Xi'an of CMONOC (Crustal Movement Observation Network of China) are solved with the proposed one step solution.The results show that the RMS (root mean square error) of local tie vectors is less than 2.0 mm.Besides,the differences are less than 2.0 mm compared with the traditional step by step solution,and the offsets and corresponding RMS between the horizontal axis and vertical axis are 3.8 mm,0.7 mm,3.6 mm and 1.3 mm,1.2 mm,1.3 mm,respectively.

Key words: local tie vectors, one step solution, GNSS/SLR, conditions

中图分类号:

P228

马下平. ITRF中GNSS/SLR并址站归心基线的“一步解”[J]. 测绘学报, 2018, 47(1): 64-70.

MA Xiaping. One Step Solution to the Local Tie Vectors of GNSS/SLR in ITRF[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(1): 64-70.

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ITRF中GNSS/SLR并址站归心基线的“一步解”

One Step Solution to the Local Tie Vectors of GNSS/SLR in ITRF

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