| GPS/BDS-2/Galileo混合双差相对定位模型应用于短基线精密定位研究 |
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| 引用本文： | 蒲亚坤,袁运斌,丁文武,阳仁贵.GPS/BDS-2/Galileo混合双差相对定位模型应用于短基线精密定位研究[J].大地测量与地球动力学,2020,40(1):56-61. |
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| 作者姓名： | 蒲亚坤 袁运斌 丁文武 阳仁贵 |
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| 作者单位： | 中国科学院测量与地球物理研究所;中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室;中国科学院大学 |
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| 基金项目： | 国家重点研发计划(Y61Y363036);国家自然科学基金(41604033)~~ |
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| 摘 要： | 对单/双频GPS/BDS/Galileo混合双差相对定位模型算法进行研究,推导了GPS/BDS/Galileo混合双差相对定位模型。选择短基线数据进行实验,对GPS、GPS/BDS标准双差、GPS/BDS混合双差、GPS/Galileo混合双差以及GPS/BDS/Galileo混合双差解算模式在定位精度、模糊度固定速度方面进行对比分析。结果表明,相对于GPS单系统或GPS/BDS双系统标准双差解算模式,双系统或三系统混合双差解算模式能有效提高模糊度首次固定时间,定位精度也有一定程度的提升。
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| 关 键 词： | GNSS 混合双差 差分系统间偏差 相对定位 |
GPS/BDS-2/Galileo Mixed Double Difference Relative Positioning Model Applied to Short Baseline Precise Positioning |
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| PU Yakun,YUAN Yunbin,DING Wenwu,YANG Rengui.GPS/BDS-2/Galileo Mixed Double Difference Relative Positioning Model Applied to Short Baseline Precise Positioning[J].Journal of Geodesy and Geodynamics,2020,40(1):56-61. |
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| Authors: | PU Yakun YUAN Yunbin DING Wenwu YANG Rengui |
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| Institution: | (Institute of Geodesy and Geophysics,CAS,340 Xudong Street,Wuhan 430077,China;State Key Laboratory of Geodesy and Earth’s Dynamics,Institute of Geodesy and Geophysics,CAS,340 Xudong Street,Wuhan 430077,China;University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100049,China) |
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| Abstract: | This paper investigates the model and algorithm of the single/dual-frequency GPS/BDS/Galileo mixed double-difference relative positioning. We deduce the model and algorithm. The experiment selects zero short baseline data for testing. The positioning accuracy and ambiguity fixed speed of the GPS-only, GPS/BDS standard double difference, GPS/BDS mixed double difference, GPS/Galileo mixed double difference and GPS/BDS/Galileo mixed double difference are analyzed. Compared with the GPS-only and GPS/BDS standard double difference solution model, the experimental results show that the three-system or dual-system mixed double difference model can improve the fixed rate of ambiguity and positioning accuracy effectively. |
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| Keywords: | GNSS mixed double difference differential inter-system biases relative positioning |
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