| 北斗三号SBAS B1c格网电离层算法修正分析 |
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| 引用本文： | 杨秋莲,赵镇,胡志刚.北斗三号SBAS B1c格网电离层算法修正分析[J].大地测量与地球动力学,2021,41(9):916-919. |
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| 作者姓名： | 杨秋莲 赵镇 胡志刚 |
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| 作者单位： | 天津市勘察设计院集团有限公司,天津市红旗南路428号,300381;天津市测绘院有限公司,天津市李七庄津涞公路,300381;武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号,430079 |
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| 摘 要： | 开展北斗星基增强系统格网电离层算法实验，分析现阶段BDSBAS电离层改正模型的精度，并进一步研究格网电离层对单频定位的影响。结果表明，BDSBAS现阶段所播发的电离层改正数、变化趋势与IGS电离层产品总体一致，误差基本在5 TECu左右；经BDSBAS电离层模型改正后的定位精度相比GPS Klobuchar模型有较大提升，提升幅度达30%～50%。
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| 关 键 词： | 北斗三号 星基增强系统 电离层 单频定位 |
Analysis of SBAS B1c Grid Ionospheric Algorithm Correction for BDS-3 |
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| YANG Qiulian,ZHAO Zhen,HU Zhigang.Analysis of SBAS B1c Grid Ionospheric Algorithm Correction for BDS-3[J].Journal of Geodesy and Geodynamics,2021,41(9):916-919. |
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| Authors: | YANG Qiulian ZHAO Zhen HU Zhigang |
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| Abstract: | In this paper, we test the algorithm of BDSBAS grid ionospheric, analyze the accuracy of the grid ionosphere correction model of BDSBAS with the high-precision grid ionospheric data as the reference value, and further study the effect of the grid ionospheric on the single-frequency positioning. The preliminary test shows that the ionospheric correction number and trend of BDSBAS broadcasted at this stage are consistent with the IGS ionospheric product, and the error is basically around 5 TECu; compared with the GPS Klobuchar model, the positioning accuracy after the correction of BDSBAS grid ionospheric model shows great improvement that reaches 30%-50%. |
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| Keywords: | BDS-3 SBAS ionospheric single-frequency positioning |
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