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Galileo三频非组合PPP相位小数偏差估计与模糊度解算

熊博文 潘林 裴根 刘宁 章湘粤 邓民

熊博文, 潘林, 裴根, 刘宁, 章湘粤, 邓民. Galileo三频非组合PPP相位小数偏差估计与模糊度解算[J]. 全球定位系统, 2024, 49(3): 51-56. doi: 10.12265/j.gnss.2023157
引用本文: 熊博文, 潘林, 裴根, 刘宁, 章湘粤, 邓民. Galileo三频非组合PPP相位小数偏差估计与模糊度解算[J]. 全球定位系统, 2024, 49(3): 51-56. doi: 10.12265/j.gnss.2023157
XIONG Bowen, PAN Lin, PEI Gen, LIU Ning, ZHANG Xiangyue, DENG Min. Fractional cycle bias estimation and ambiguity resolution for Galileo triple-frequency uncombined PPP[J]. GNSS World of China, 2024, 49(3): 51-56. doi: 10.12265/j.gnss.2023157
Citation: XIONG Bowen, PAN Lin, PEI Gen, LIU Ning, ZHANG Xiangyue, DENG Min. Fractional cycle bias estimation and ambiguity resolution for Galileo triple-frequency uncombined PPP[J]. GNSS World of China, 2024, 49(3): 51-56. doi: 10.12265/j.gnss.2023157

Galileo三频非组合PPP相位小数偏差估计与模糊度解算

doi: 10.12265/j.gnss.2023157
基金项目: 国家自然科学基金项目(41904030)
详细信息
    作者简介:

    熊博文:(2000—),男,硕士研究生,研究方向为GNSS精密定位. E-mail:bowenxiong@csu.edu.cn

    潘林:(1989—),男,博士,副教授,研究方向为GNSS精密定位及其地学应用. E-mail:linpan@csu.edu.cn

    裴根:(1998—),男,硕士研究生,研究方向为GNSS数据处理. E-mail:genpei@csu.edu.cn

    通讯作者:

    潘 林E-mail: linpan@csu.edu.cn

  • 中图分类号: P228.4

Fractional cycle bias estimation and ambiguity resolution for Galileo triple-frequency uncombined PPP

  • 摘要: 欧洲的Galileo目前已经有28颗在轨可用卫星,具备全球精密定位能力,并且所有卫星均能够播发多频信号,多频信号融合有望进一步改善精密单点定位(precise point positioning,PPP)模糊度固定解性能. 本文研究了Galileo三频非组合PPP相位小数偏差(fractional cycle bias,FCB)估计与模糊度解算(ambiguity resolution,AR)方法,并将其结果同双频非组合PPP模糊度固定解与浮点解结果进行了对比分析. 结果表明:利用155个全球分布的地面跟踪站数据进行FCB估计,单个频率上的FCB估值序列标准差(standard deviation,STD)优于0.04周;双频PPP浮点解在E、N、U方向收敛时间分别为32.0 min、10.0 min、43.5 min,双频PPP固定解收敛时间分别减少到30.5 min、8.5 min、32.0 min,三频PPP固定解收敛时间分别进一步缩短到16.5 min、8.0 min、32.0 min.

     

  • 图  1  155个MGEX站地理分布

    图  2  2021年11月8日E5a−E5b超宽巷、E1−E5a宽巷、4×E1−3×E5a窄巷FCB估值序列

    图  3  2021年11月8日E1、E5a、E5b非组合FCB估值序列

    图  4  用于定位验证的35个MGEX站地理分布

    图  5  ARHT站三种PPP方案前1 h定位误差

    图  6  BRUX站三种PPP方案前1 h定位误差

    图  7  三种PPP方案前1 h定位精度(采样间隔30 s)

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出版历程
  • 收稿日期:  2023-07-26
  • 录用日期:  2024-03-14
  • 网络出版日期:  2024-04-25

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