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基于铱星机会信号的定位技术

秦红磊 谭滋中 丛丽 赵超

秦红磊, 谭滋中, 丛丽, 等 . 基于铱星机会信号的定位技术[J]. 北京航空航天大学学报, 2019, 45(9): 1691-1699. doi: 10.13700/j.bh.1001-5965.2018.0717
引用本文: 秦红磊, 谭滋中, 丛丽, 等 . 基于铱星机会信号的定位技术[J]. 北京航空航天大学学报, 2019, 45(9): 1691-1699. doi: 10.13700/j.bh.1001-5965.2018.0717
QIN Honglei, TAN Zizhong, CONG Li, et al. Positioning technology based on IRIDIUM signals of opportunity[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(9): 1691-1699. doi: 10.13700/j.bh.1001-5965.2018.0717(in Chinese)
Citation: QIN Honglei, TAN Zizhong, CONG Li, et al. Positioning technology based on IRIDIUM signals of opportunity[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(9): 1691-1699. doi: 10.13700/j.bh.1001-5965.2018.0717(in Chinese)

基于铱星机会信号的定位技术

doi: 10.13700/j.bh.1001-5965.2018.0717
基金项目: 国防科技创新特区项目
详细信息
    作者简介:

    秦红磊  男, 教授, 博士生导师。主要研究方向:机会信号定位、相对导航、室内定位及组合导航等

    谭滋中  男, 博士研究生。主要研究方向:卫星导航定位、低轨卫星定位及机会信号定位等

    丛丽  女, 博士, 副教授, 硕士生导师。主要研究方向:组合导航定位技术、机会信号定位及室内定位等

    通讯作者:

    丛丽, E-mail: congli_bh@buaa.edu.cn

  • 中图分类号: P228.1;TN967.1

Positioning technology based on IRIDIUM signals of opportunity

Funds: National Defence Science and Technology Innovation Special Zone Project
More Information
  • 摘要:

    全球导航卫星系统(GNSS)到达地球表面的信号弱,易受干扰,并且需要投入大量的基础设施,而机会信号可有效弥补这方面的不足。针对目前陆基机会信号(广播、数字电视和移动基站等)存在的覆盖性、可用性限制,提出了利用铱星系统实现天基机会信号定位。通过对铱星信号的通信体制进行深入研究,建立了瞬时多普勒定位数学模型,提出了利用铱星信号的单音信号获取多普勒频率信息,并结合轨道预测模型计算的卫星轨道信息实现铱星定位的方法。实测数据验证结果表明,利用实际铱星信号能够实现精度优于200 m的定位。研究成果对基于机会信号的定位技术的理论研究及应用具有参考意义。

     

  • 图 1  铱星系统用户链路FDMA频率分配

    Figure 1.  IRIDIUM user links FDMA frequency assignment

    图 2  铱星系统用户链路TDMA帧结构

    Figure 2.  IRIDIUM user links TDMA frame structure

    图 3  铱星系统用户链路信号结构

    Figure 3.  IRIDIUM user links signal structure

    图 4  铱星系统用户链路单工7信道信号实时频谱

    Figure 4.  Real-time frequency spectrum of IRIDIUM user links simplex 7 channel signal

    图 5  铱星系统用户链路单工7信道时域信号

    Figure 5.  Time domain signal of IRIDIUM user links simplex 7 channel

    图 6  铱星系统用户链路单工7信道基带信号IQ矢量图

    Figure 6.  IQ vector of IRIDIUM user links simplex 7 channel baseband signal

    图 7  铱星系统用户链路单工7信道基带信号相位图

    Figure 7.  Phase of IRIDIUM user links simplex 7 channel baseband signal

    图 8  铱星系统用户链路单工11信道信号实时频谱

    Figure 8.  Real-time frequency spectrum of IRIDIUM user links simplex 11 channel signal

    图 9  铱星系统用户链路单工11信道时域信号

    Figure 9.  Time domain signal of IRIDIUM user links simplex 11 channel

    图 10  铱星系统用户链路单工11信道基带信号IQ矢量图

    Figure 10.  IQ vector of IRIDIUM user links simplex 11 channel baseband signal

    图 11  铱星系统用户链路单工11信道基带信号相位图

    Figure 11.  Phase of IRIDIUM user links simplex 11 channel baseband signal

    图 12  铱星系统用户链路单工7信道信号多普勒曲线

    Figure 12.  Doppler curves of IRIDIUM user links simplex 7 channel signal

    图 13  铱星系统用户链路单工11信道信号多普勒曲线

    Figure 13.  Doppler curves of IRIDIUM user links simplex 11 channel signal

    图 14  水平定位误差均值

    Figure 14.  Error mean value of horizontal positioning

    图 15  水平定位误差RMS值

    Figure 15.  Error RMS value of horizontal positioning

    图 16  瞬时多普勒定位及高程辅助瞬时多普勒定位误差RMS值

    Figure 16.  Error RMS value of instantaneous Doppler positioning and height aided instantaneous Doppler positioning

    表  1  铱星多普勒定位误差统计结果

    Table  1.   Error statistic results of IRIDIUM Doppler positioning

    统计参数东向误差/m北向误差/m天顶误差/m
    均值(最大)21349-124
    均值(最小)10616-61
    RMS(最大)404109208
    RMS(最小)30773164
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出版历程
  • 收稿日期:  2018-12-03
  • 录用日期:  2019-03-30
  • 网络出版日期:  2019-09-20

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