北斗二号/三号融合载波相位时间传递精度分析 |
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引用本文: | 于合理,李明磊,马国元,叶子玉. 北斗二号/三号融合载波相位时间传递精度分析[J]. 全球定位系统, 2022, 47(4): 46-49. DOI: 10.12265/j.gnss.2022007 |
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作者姓名: | 于合理 李明磊 马国元 叶子玉 |
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作者单位: | 电子信息系统复杂电磁环境效应国家重点实验室, 河南 洛阳 471003 |
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摘 要: | 本文给出了载波相位时间传递数学模型,并基于多模全球卫星导航系统(GNSS)试验跟踪网MGEX (Multi-GNSS Experiment)的实测数据,对北斗二号/北斗三号卫星导航系统(BDS-2/BDS-3)融合载波相位时间传递性能进行分析. 结果表明:BDS-3的加入能够增加测站的可视卫星数量,改善卫星分布空间构型. 相比仅使用BDS-2,BDS-2/BDS-3融合解算可将MRO1-CUSV和NNOR-CUSV的时间传递精度分别从0.11 ns、0.10 ns提高到0.07 ns、0.08 ns,A类不确定度分别从0.007 ns、0.006 ns提高到0.004 ns、0.005 ns.
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关 键 词: | 北斗卫星导航系统(BDS) 全球卫星导航系统(GNSS) 载波相位 时间传递 精度 |
收稿时间: | 2022-01-11 |
Performance analysis of BDS-2/BDS-3 carrier phase time transfer |
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Affiliation: | State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471003, China |
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Abstract: | The mathematical model of carrier phase time transfer is given, and the performance of BeiDou-2/BeiDou-3 Navigation Satellite System (BDS-2/BDS-3) combined carrier phase time transfer is analyzed based on the measured data of the multi-GNSS experiment (MGEX). The results show that the addition of BDS-3 can increase the number of visible satellites and improve the spatial configuration of satellite distribution. Compared with only using the BDS-2 system, the time transfer accuracy of MRO1-CUSV and NNOR-CUSV can be improved from 0.11 ns and 0.10 ns to 0.07 ns and 0.08 ns, and the A-class uncertainty can be improved from 0.007 ns and 0.006 ns to 0.004 ns and 0.005 ns, respectively, in the BDS-2/BDS-3 combination scenario. |
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