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基于视向矢量修正的铱星机会信号多普勒差分定位技术

秦红磊 武宁 赵超

秦红磊,武宁,赵超. 基于视向矢量修正的铱星机会信号多普勒差分定位技术[J]. 北京航空航天大学学报,2024,50(3):748-756 doi: 10.13700/j.bh.1001-5965.2022.0378
引用本文: 秦红磊,武宁,赵超. 基于视向矢量修正的铱星机会信号多普勒差分定位技术[J]. 北京航空航天大学学报,2024,50(3):748-756 doi: 10.13700/j.bh.1001-5965.2022.0378
QIN H L,WU N,ZHAO C. Differential positioning with Doppler measurements from Iridium satellite signals of opportunity based on lines of sight correction[J]. Journal of Beijing University of Aeronautics and Astronautics,2024,50(3):748-756 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0378
Citation: QIN H L,WU N,ZHAO C. Differential positioning with Doppler measurements from Iridium satellite signals of opportunity based on lines of sight correction[J]. Journal of Beijing University of Aeronautics and Astronautics,2024,50(3):748-756 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0378

基于视向矢量修正的铱星机会信号多普勒差分定位技术

doi: 10.13700/j.bh.1001-5965.2022.0378
详细信息
    通讯作者:

    E-mail:qhlmmm@sina.com

  • 中图分类号: P228.1;TN967.1

Differential positioning with Doppler measurements from Iridium satellite signals of opportunity based on lines of sight correction

More Information
  • 摘要:

    低地球轨道(LEO)卫星机会信号定位技术是全球导航卫星系统(GNSS)的有效补充和备份定位手段。LEO卫星机会信号定位误差主要因素是具有时空相关性的卫星星历和星钟误差,差分定位方法虽然可以有效降低该误差,但LEO卫星轨道较低使长基线定位误差仍然较大。针对这一问题,提出基于视向矢量修正的多普勒差分定位算法。通过仿真试验验证了在长基线情况下所提算法的定位精度明显优于基本算法,同时利用实际铱星信号多普勒差分定位试验验证了所提算法的有效性。

     

  • 图 1  铱星信号体制

    Figure 1.  Iridium satellite signal system

    图 2  短基线差分定位模型

    Figure 2.  Short-baseline differential positioning model

    图 3  长基线差分定位模型

    Figure 3.  Long-baseline differential positioning model

    图 4  本文算法原理

    Figure 4.  Principle of proposed algorithm

    图 5  本文算法流程

    Figure 5.  Flow of proposed algorithm

    图 6  仿真差分定位结果

    Figure 6.  Simulation results for differential positioning

    图 7  铱星机会信号接收及处理系统

    Figure 7.  Iridium satellite SOP receiver and processing system

    图 8  信号采集地点

    Figure 8.  Signal acquisition site

    图 9  短基线(496 m)试验差分定位结果

    Figure 9.  Differential positioning results for short baseline (496 m) experiment

    图 10  长基线(20.9 km)试验差分定位结果

    Figure 10.  Differential positioning results for long baseline (20.9 km) experiment

    图 11  定位试验差分多普勒误差统计结果

    Figure 11.  Statistical results of differential Doppler error in positioning experiments

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  • 被引次数: 0
出版历程
  • 收稿日期:  2022-05-18
  • 录用日期:  2022-06-18
  • 网络出版日期:  2022-07-05
  • 整期出版日期:  2024-03-27

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