测绘学报 ›› 2018, Vol. 47 ›› Issue (S0): 78-85.doi: 10.11947/j.AGCS.2018.20180324

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接收机端天线相位中心标定及其对北斗导航卫星精密定轨的影响

苏牡丹1,2, 赵齐乐1, 郭靖1, 苏醒3, 胡志刚1, 郭慧君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. 北京跟踪与通信技术研究所, 北京 100094;
    3. 山东科技大学, 山东 青岛 266590
  • 收稿日期:2018-07-05 修回日期:2018-12-27 出版日期:2018-12-31 发布日期:2019-05-18
  • 通讯作者: 赵齐乐 E-mail:Zhaoql@whu.edu.cn
  • 作者简介:苏牡丹(1981-),女,硕士,助理研究员,研究方向为卫星导航。E-mail:35011236@qq.com
  • 基金资助:
    国家自然科学基金(41574030;41774035)

Phase Center Calibration for Receiver Antenna and Its Impact on Precise Orbit Determination of BDS Satellites

SU Mudan1,2, ZHAO Qile1, GUO Jing1, SU Xing3, HU Zhigang1, GUO Huijun1   

  1. 1. GNSS Research Center, Wuhan University, Wuhan 430079, China;
    2. Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China;
    3. College of Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
  • Received:2018-07-05 Revised:2018-12-27 Online:2018-12-31 Published:2019-05-18
  • Supported by:
    The National Natural Science Foundation of China (Nos. 41574030;41774035)

摘要: 实现并给出了基于自动机器人的TRM57971.00/NONE和TRM59800.00/NONE两类天线在GPS L1和L2以及北斗B1I和B2I频点的相位中心改正,并将两者相位中心改正结果进行了比较和分析。在此基础上,利用2016年4月9日到2016年5月8日共30天配有以上两类天线的约31个IGS MGEX测站数据,在是否考虑接收机端北斗频点相位中心偏差以及偏差和变化的条件下确定了3类北斗卫星精密轨道。结果表明考虑接收机天线北斗频点相位中心改正能够有效改善北斗IGSO和MEO卫星重叠轨道差异,但是考虑相位中心偏差以及变化的轨道改善幅度与仅考虑相位中心偏差相当。具体而言,考虑接收机端北斗频点相位中心改正后北斗IGSO卫星轨道在切向、法向、径向的重叠轨道差异分别改善了63.1 mm、21.5 mm和6.7 mm;MEO卫星轨道重叠精度则在切向、径向和法向分别改善了217.1 mm、75.8 mm和23.3 mm。同时北斗单系统精密单点定位相对于单GPS系统精密单点定位结果在高程方向的一致性可以提高约10.0 mm。

关键词: 天线相位中心改正, 天线相位中心偏差, 天线相位中心变化, 北斗, 精密定轨

Abstract: The phase center corrections (PCCs) for TRM57971.00/NONE and TRM59800.00/NONE antennas on GPS L1 and L2 as well as BDS B1I and B2I frequencies were calibrated by automatic robot. Additionally, the differences between calibrated PCCs of GPS L1 and L2 as well as BDS B1I and B2I were compared. Three kinds of BDS precise orbit products were determined with or without accounting for the receiver antenna's Phase Center Offsets (PCOs) or PCCs based on about 31 stations from International GNSS Service (IGS) Multi-GNSS Experiment (MGEX) network to investigate the impacts of receiver antenna on BDS orbits. The results demonstrated that the overlapping orbit differences of BDS Inclined Geosynchronous Orbit (IGSO) satellites were improved by 63.1 mm, 21.5 mm, and 6.7 mm in along-track, cross-track, and radial directions, respectively. For BDS Medium Earth Orbit (MEO) satellites, the improvements can reach to 217.1 mm, 75.8 mm, and 23.3 mm in along-track, cross-track, and radial directions, respectively, when the PCOs only have been used for precise orbit determination. And the similar performance has been achieved by using PCCs as that of using PCOs only. The accuracy of precise point positioning improved nearly 10.0 mm in up direction once the calibrated PCCs were used.

Key words: phase center correction, phase center offset, phase center variation, BDS, precise orbit determination

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