测绘学报 ›› 2022, Vol. 51 ›› Issue (7): 1259-1270.doi: 10.11947/j.AGCS.2022.20220232

• 大地测量学与导航 • 上一篇    下一篇

大地测量坐标框架建立的进展与思考

姜卫平1,2, 李昭1,2, 魏娜1, 刘经南1   

  1. 1. 武汉大学卫星导航定位技术研究中心, 湖北 武汉 430079;
    2. 湖北珞珈实验室, 湖北 武汉 430079
  • 收稿日期:2022-04-01 修回日期:2022-06-29 发布日期:2022-08-13
  • 作者简介:姜卫平(1972-),男,博士,教授,博士生导师,研究方向为卫星大地测量学理论与方法及工程应用研究。E-mail:wpjiang@whu.edu.cn
  • 基金资助:
    湖北省科技创新人才及服务专项(2022EJD010);国家自然科学基金创新研究群体项目(41721003);湖北珞珈实验室专项基金(220100020)

Progress and thoughts on establishment of geodetic coordinate frame

JIANG Weiping1,2, LI Zhao1,2, WEI Na1, LIU Jingnan1   

  1. 1. GNSS Research Center, Wuhan University, Wuhan, Hubei, 430079, China;
    2. Hubei Luojia Laboratory, Wuhan, Hubei, 430079, China
  • Received:2022-04-01 Revised:2022-06-29 Published:2022-08-13
  • Supported by:
    Program for Hubei Provincial Science and Technology Innovation Talents (No. 2022EJD010)|Foundation for Innovative Research Groups of the National Natural Science Foundation of China (No. 41721003)|The Special Fund of Hubei Luojia Laboratory (No. 220100020)

摘要: 坐标框架是描述地球形状及变化、表达地球空间信息的基础,也是拓展人类活动、促进社会发展的关键地球空间信息基础设施。随着空间大地测量观测技术的发展,地球科学及相关学科间的交叉渗透融合,利用其建立全球或区域坐标框架成为当前大地测量的主要任务。研究建立1毫米级坐标框架是国际大地测量学界21世纪的学科目标和重要挑战。本文以当前建立理论最完善、应用最广泛、精度最高的国际地球参考框架为例,描述了基于空间大地测量观测技术的坐标框架建立方法,阐述了全球及区域地心坐标框架建设的最新进展及局限性,最后针对建立1毫米级坐标框架的几个关键问题提出了研究思路。

关键词: 坐标系统, 坐标框架, 空间大地测量技术, 非线性变化, 多技术组合

Abstract: Coordinate frame is the basis for describing the Earth's shape and its variation, as well as geospatial information. It is also a key geospatial information infrastructure to expand human activities and promote social development. With development of space geodetic observation technologies together with integration of earth science and related disciplines, establishment of global and regional coordinate frame based on space geodetic techniques has become the main task of geodesy field at present, while the goal of building coordinate frame with 1 millimeter (mm) level prove to be both the disciplinary goal and great challenge for international geodesy community of the 21st century. Taking the most widely used International Terrestrial Reference Frame (ITRF) with perfect theory and the highest accuracy as an example, this paper firstly describes the method of establishing coordinate frame based on space geodetic technologies. Secondly, the latest progress and limitations of recent global/regional coordinate frames are illustrated. Finally, ideas for several key issues aiming at establishing the 1 mm level coordinate frame are proposed.

Key words: coordinate system, coordinate frame, space geodetic techniques, non-linear variation, multi-technique combination

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