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基于VLBI的高精度定位

郭丽 张宇 李金岭 王广利 郑为民

郭丽, 张宇, 李金岭, 王广利, 郑为民. 基于VLBI的高精度定位[J]. 深空探测学报(中英文). doi: 10.15982/j.issn.2096-9287.2020.20200021
引用本文: 郭丽, 张宇, 李金岭, 王广利, 郑为民. 基于VLBI的高精度定位[J]. 深空探测学报(中英文). doi: 10.15982/j.issn.2096-9287.2020.20200021
GUO Li, ZHANG Yu, LI Jinling, WANG Guangli, ZHENG Weimin. The High Precise Positioning Reduction Based on VLBI[J]. Journal of Deep Space Exploration. doi: 10.15982/j.issn.2096-9287.2020.20200021
Citation: GUO Li, ZHANG Yu, LI Jinling, WANG Guangli, ZHENG Weimin. The High Precise Positioning Reduction Based on VLBI[J]. Journal of Deep Space Exploration. doi: 10.15982/j.issn.2096-9287.2020.20200021

基于VLBI的高精度定位

doi: 10.15982/j.issn.2096-9287.2020.20200021
基金项目: 国家自然科学基金资助项目(11873076);探月工程项目VLBI测轨资助项目
详细信息
    作者简介:

    郭丽(1979– ),女,副研究员,硕士生导师,主要研究方向:探测器定位分析与脉冲星天体测量。通讯地址:上海市南丹路80号(200030)电话:(021)34775245 E-mail:lguo@shao.ac.cn

  • ● In special orbit maneuvering period such as braking at perilune and CE-4 relay satellite entering the Halo orbit at the Lagrangian translation point L2 of Earth-lunar system, the six-orbit elements can be got at real time as well,offering a rapid reference for the project. ● Using the joint statistical method and lunar height constraint,the position of CE-3 lander reaches at 100 m external coincidence accuracy. ● With VLBI Same Beam Interferometry(SBI) phase-delay measurements, the external coincidence accuracy of the CE-3 rover reaches at 1- meter level. ● With the precise point positioning method,free of various mechanical constraint, the three-dimensioned position information can be got in real-time,with the advantage of rapid respond and high accuracy, providing the important reference for the project.
  • 中图分类号: P35

The High Precise Positioning Reduction Based on VLBI

  • 摘要: 基于甚长基线干涉测量技术(Very Long Base Interferometer,VLBI)的时延、时延率以及USB(United S-band)/UXB(United X-band)的测距特点,采用联合统计定位及月面高程约束策略,实现了高精度的探测器的实时单点定位和准实时联合统计定位,且实时单点定位不受力学约束能够快速准确地给出三维位置信息,最终实现在轨控弧段和探测器被月球捕获阶段的轨道根数的实时监测。在“嫦娥3号”月面着陆器定位中,获得月面位置好于100 m的外符合精度。在特殊的轨道阶段,采用△DOR差分技术,VLBI探测器近月捕获制动及“嫦娥4号”中继星变轨进入地月L2平动点的Halo轨道等特殊阶段,实时快速地给出6个瞬时轨道根数,为工程提供重要参考。
    Highlights
    ● In special orbit maneuvering period such as braking at perilune and CE-4 relay satellite entering the Halo orbit at the Lagrangian translation point L2 of Earth-lunar system, the six-orbit elements can be got at real time as well,offering a rapid reference for the project. ● Using the joint statistical method and lunar height constraint,the position of CE-3 lander reaches at 100 m external coincidence accuracy. ● With VLBI Same Beam Interferometry(SBI) phase-delay measurements, the external coincidence accuracy of the CE-3 rover reaches at 1- meter level. ● With the precise point positioning method,free of various mechanical constraint, the three-dimensioned position information can be got in real-time,with the advantage of rapid respond and high accuracy, providing the important reference for the project.
  • 图  1  CE-4中继星s8c12a实验中时延拟合前后残差

    Fig.  1  The pre-fit and post-fit of delay residuals in s8c12a experiment of CE-4 relay satellite project

    图  2  CE-4中继星s8c12a实验中测距拟合前后残差

    Fig.  2  The pre-fit and post-fit of range residuals in s8c12a experiment of CE-4 relay satellite project

    图  3  CE-4的s8c12a实验中实时定位结果与预报轨道的差异

    Fig.  3  The differences between the positioning results in real-time and the orbit prediction in experiment s8c12a of CE-4 project

    图  4  CE-4中继星任务中定位精度的统计

    Fig.  4  The position precision statistics in CE-4 relay satellite project

    图  5  CE-4中继星进入Halo轨道前后的轨道根数变化情况

    起始时间为2019-06-14 03:00

    Fig.  5  Orbital elements change during the CE-4 relay satellite entering the Halo orbit

    表  1  CE-4中继星近月捕获期间的偏心率变化

    Table  1  Eccentricity changes of CE-4 relay satellite during the baking at perilune

    时间(h:m:s)偏心率 时间(h:m:s)偏心率
    13:32:05 1.303 13:41:05 1.087
    13:33:05 1.288 13:42:05 1.066
    13:34:05 1.310 13:43:05 1.046
    13:35:05 1.224 13:44:05 1.025
    13:36:05 1.201 13:45:05 1.037
    13:37:05 1.176 13:46:05 0.996
    13:38:05 1.151 13:47:05 0.971
    13:39:05 1.130 13:48:05 0.966
    13:40:05 1.108 13:49:05 0.966
    下载: 导出CSV
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  • 收稿日期:  2020-04-29
  • 修回日期:  2020-05-25
  • 网络出版日期:  2020-12-17

基于VLBI的高精度定位

doi: 10.15982/j.issn.2096-9287.2020.20200021
    基金项目:  国家自然科学基金资助项目(11873076);探月工程项目VLBI测轨资助项目
    作者简介:

    郭丽(1979– ),女,副研究员,硕士生导师,主要研究方向:探测器定位分析与脉冲星天体测量。通讯地址:上海市南丹路80号(200030)电话:(021)34775245 E-mail:lguo@shao.ac.cn

  • ● In special orbit maneuvering period such as braking at perilune and CE-4 relay satellite entering the Halo orbit at the Lagrangian translation point L2 of Earth-lunar system, the six-orbit elements can be got at real time as well,offering a rapid reference for the project. ● Using the joint statistical method and lunar height constraint,the position of CE-3 lander reaches at 100 m external coincidence accuracy. ● With VLBI Same Beam Interferometry(SBI) phase-delay measurements, the external coincidence accuracy of the CE-3 rover reaches at 1- meter level. ● With the precise point positioning method,free of various mechanical constraint, the three-dimensioned position information can be got in real-time,with the advantage of rapid respond and high accuracy, providing the important reference for the project.
  • 中图分类号: P35

摘要: 基于甚长基线干涉测量技术(Very Long Base Interferometer,VLBI)的时延、时延率以及USB(United S-band)/UXB(United X-band)的测距特点,采用联合统计定位及月面高程约束策略,实现了高精度的探测器的实时单点定位和准实时联合统计定位,且实时单点定位不受力学约束能够快速准确地给出三维位置信息,最终实现在轨控弧段和探测器被月球捕获阶段的轨道根数的实时监测。在“嫦娥3号”月面着陆器定位中,获得月面位置好于100 m的外符合精度。在特殊的轨道阶段,采用△DOR差分技术,VLBI探测器近月捕获制动及“嫦娥4号”中继星变轨进入地月L2平动点的Halo轨道等特殊阶段,实时快速地给出6个瞬时轨道根数,为工程提供重要参考。

注释:
1)  ● In special orbit maneuvering period such as braking at perilune and CE-4 relay satellite entering the Halo orbit at the Lagrangian translation point L2 of Earth-lunar system, the six-orbit elements can be got at real time as well,offering a rapid reference for the project. ● Using the joint statistical method and lunar height constraint,the position of CE-3 lander reaches at 100 m external coincidence accuracy. ● With VLBI Same Beam Interferometry(SBI) phase-delay measurements, the external coincidence accuracy of the CE-3 rover reaches at 1- meter level. ● With the precise point positioning method,free of various mechanical constraint, the three-dimensioned position information can be got in real-time,with the advantage of rapid respond and high accuracy, providing the important reference for the project.

English Abstract

郭丽, 张宇, 李金岭, 王广利, 郑为民. 基于VLBI的高精度定位[J]. 深空探测学报(中英文). doi: 10.15982/j.issn.2096-9287.2020.20200021
引用本文: 郭丽, 张宇, 李金岭, 王广利, 郑为民. 基于VLBI的高精度定位[J]. 深空探测学报(中英文). doi: 10.15982/j.issn.2096-9287.2020.20200021
GUO Li, ZHANG Yu, LI Jinling, WANG Guangli, ZHENG Weimin. The High Precise Positioning Reduction Based on VLBI[J]. Journal of Deep Space Exploration. doi: 10.15982/j.issn.2096-9287.2020.20200021
Citation: GUO Li, ZHANG Yu, LI Jinling, WANG Guangli, ZHENG Weimin. The High Precise Positioning Reduction Based on VLBI[J]. Journal of Deep Space Exploration. doi: 10.15982/j.issn.2096-9287.2020.20200021
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