测绘学报 ›› 2019, Vol. 48 ›› Issue (7): 805-809.doi: 10.11947/j.AGCS.2019.20190131

• 综述 •    下一篇

北斗坐标系

魏子卿1,2, 吴富梅1,2, 刘光明1,2   

  1. 1. 地理信息工程国家重点实验室, 陕西 西安 710054;
    2. 西安测绘研究所, 陕西 西安 710054
  • 收稿日期:2019-04-11 修回日期:2019-05-16 出版日期:2019-07-20 发布日期:2019-07-26
  • 作者简介:魏子卿(1937-),男,中国工程院院士,研究方向为大地坐标系、大地边值问题及GNSS测量。
  • 基金资助:
    国家自然科学基金(41674025)

The BeiDou coordinate system

WEI Ziqing1,2, WU Fumei1,2, LIU Guangming1,2   

  1. 1. State Key Laboratory of Geo-information Engineering, Xi'an 710054, China;
    2. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China
  • Received:2019-04-11 Revised:2019-05-16 Online:2019-07-20 Published:2019-07-26
  • Supported by:
    The National Natural Science Foundation of China(No. 41674025)

摘要: 北斗坐标系是北斗卫星导航系统的大地基准。本文在扼要叙述背景情况之后,首先给出了北斗坐标系原点、尺度、定向的定义和参考椭球的定义和导出常数;其次介绍北斗坐标系的首次实现,这次实现由北斗系统的8个监测站在历元2010.0的ITRF2014框架下的坐标和速度体现,它们是通过处理一个包括8个监测站的全球GNSS网4期GPS数据、框架对准与监测站坐标序列的线性回归拟合得到的;最后就参考框架的更新周期、监测站境外布设和连续观测、精密星历的生成与发布,北斗坐标系的标准化问题进行了讨论,并提出一些建议。

关键词: 北斗坐标系, 北斗卫星导航系统, 参考框架, 监测站

Abstract: The BeiDou coordinate system(BDCS) is the geodetic datum of the BeiDou Satellite Navigation System. After a brief description of the backgrounds, the definition of origin, scale, and orientation, and the defining and deriving constants of the reference ellipsoid of the BDCS are given. Then addressed is the first realization of the BDCS, namely, the ITRF2014 coordinates at epoch 2010.0 and velocities of 8 monitoring stations of the BeiDou system, which has been achieved by processing four-phases GPS data for a global GNSS network including the monitoring stations, and by the frame alignment and the linear regression fitting of station coordinate series. Discussions and suggestions are made about the period of re-realization of the system, the monitoring stations' overseas layout and continuously observing, the generation and distribution of precise ephemerides of BeiDou satellites, and the standardization of the BDCS. Finally, a summary concludes the paper.

Key words: The BeiDou coordinate system, BeiDou satellite navigation system, reference frame, monitoring stations

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