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中国区域电离层异常数据野值检测

刘禹彤 李锐 包俊杰 刘亚希

刘禹彤, 李锐, 包俊杰, 等 . 中国区域电离层异常数据野值检测[J]. 北京航空航天大学学报, 2020, 46(1): 133-140. doi: 10.13700/j.bh.1001-5965.2019.0152
引用本文: 刘禹彤, 李锐, 包俊杰, 等 . 中国区域电离层异常数据野值检测[J]. 北京航空航天大学学报, 2020, 46(1): 133-140. doi: 10.13700/j.bh.1001-5965.2019.0152
LIU Yutong, LI Rui, BAO Junjie, et al. Outlier detection of ionospheric anomaly data in China[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(1): 133-140. doi: 10.13700/j.bh.1001-5965.2019.0152(in Chinese)
Citation: LIU Yutong, LI Rui, BAO Junjie, et al. Outlier detection of ionospheric anomaly data in China[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(1): 133-140. doi: 10.13700/j.bh.1001-5965.2019.0152(in Chinese)

中国区域电离层异常数据野值检测

doi: 10.13700/j.bh.1001-5965.2019.0152
详细信息
    作者简介:

    刘禹彤, 女, 硕士研究生。主要研究方向:星基增强系统电离层网格校正技术及电离层异常检测方法

    李锐, 男, 博士, 高级工程师。主要研究方向:卫星导航完好性

    通讯作者:

    李锐, E-mail:lee_ruin@263.net

  • 中图分类号: P228.4

Outlier detection of ionospheric anomaly data in China

More Information
  • 摘要:

    针对中国区域连续运行参考站接收机野值会干扰星基增强系统(SBAS)电离层异常事件提取的问题,提出了一种基于电离层垂直延迟时间梯度的野值检测方法。首先,介绍了电离层延迟数据的提取方法;然后,论述了依据野值和电离层异常的不同时空相关特性进行野值检测的方法,并用单双频定位误差结果验证了野值检测的正确性;最后,对检测结果进行了分析。结果表明:该方法可有效区分野值和电离层异常;在中国大陆构造环境监测网络200多个参考站中,野值检测所剔除的参考站数目在3~10个,对电离层穿透点空间分布的影响在可接受范围内。

     

  • 图 1  电离层垂直延迟值结果对比

    Figure 1.  Comparison of ionospheric vertical delay values

    图 2  2016年3月26日电离层垂直延迟时间梯度概率分布

    Figure 2.  Ionosphere vertical delay time gradient probability distribution on March 26, 2016

    图 3  野值检测流程图

    Figure 3.  Flowchart of outlier detection

    图 4  2016年3月26日HLAR站电离层垂直延迟时间梯度

    Figure 4.  Ionospheric vertical delay time gradient at HLAR station on March 26, 2016

    图 5  2016年3月26日QHTR站电离层垂直延迟时间梯度

    Figure 5.  Ionospheric vertical delay time gradient at QHTR station on March 26, 2016

    图 6  2016年3月26日QION站电离层垂直延迟时间梯度

    Figure 6.  Ionospheric vertical delay time gradient at QION station on March 26, 2016

    图 7  2015年3月17日HAQS站电离层垂直延迟时间梯度

    Figure 7.  Ionospheric vertical delay time gradient at HAQS station on March 17, 2015

    图 8  2016年3月26日YNMZ站1~1.25 h单双频定位误差结果

    Figure 8.  Results of single- and dual-frequency positioning error between 1 h and 1.25 h at YNMZ station on March 26, 2016

    图 9  2016年3月26日YNMZ站14~14.25 h单双频定位误差结果

    Figure 9.  Results of single- and dual-frequency positioning error between 14 h and 14.25 h at YNMZ station on March 26, 2016

    图 10  2016年3月26日QHTR站1~1.25 h单双频定位误差结果

    Figure 10.  Results of single- and dual-frequency positioning error between 1 h and 1.25 h at QHTR station on March 26, 2016

    图 11  剔除次数较多的参考站

    Figure 11.  Reference stations with more elimination times

    表  1  野值剔除结果

    Table  1.   Outlier elimination results

    日期 剔除站数
    2016-01-08 8
    2016-01-17 5
    2016-02-22 3
    2016-02-28 5
    2016-03-06 9
    2016-03-13 9
    2016-03-26 9
    2016-04-09 5
    2016-06-18 10
    2016-10-13 10
    2016-12-16 6
    2016-12-25 3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-04-04
  • 录用日期:  2019-06-08
  • 刊出日期:  2020-01-20

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