刘明亮, 安家春, 王泽民, 张保军, 宋翔宇. BDS-3多频伪距定位性能分析[J]. 武汉大学学报 ( 信息科学版), 2023, 48(6): 902-910. DOI: 10.13203/j.whugis20200714
引用本文: 刘明亮, 安家春, 王泽民, 张保军, 宋翔宇. BDS-3多频伪距定位性能分析[J]. 武汉大学学报 ( 信息科学版), 2023, 48(6): 902-910. DOI: 10.13203/j.whugis20200714
LIU Mingliang, AN Jiachun, WANG Zemin, ZHANG Baojun, SONG Xiangyu. Performance Analysis of BDS-3 Multi-frequency Pseudorange Positioning[J]. Geomatics and Information Science of Wuhan University, 2023, 48(6): 902-910. DOI: 10.13203/j.whugis20200714
Citation: LIU Mingliang, AN Jiachun, WANG Zemin, ZHANG Baojun, SONG Xiangyu. Performance Analysis of BDS-3 Multi-frequency Pseudorange Positioning[J]. Geomatics and Information Science of Wuhan University, 2023, 48(6): 902-910. DOI: 10.13203/j.whugis20200714

BDS-3多频伪距定位性能分析

Performance Analysis of BDS-3 Multi-frequency Pseudorange Positioning

  • 摘要: 北斗卫星导航系统(BeiDou navigation system, BDS)正式开通全球服务,为详细评估BDS-3全球定位性能,以全球16个MGEX跟踪站多天实测数据为基础,采用Net_Diff软件进行了全球范围内BDS-3单频、双频无电离层组合与双频非组合模型下双频、三频非组合模型和三频无电离层两两组合模型三频伪距单点定位解算试验,并与GPS、Galileo部分频率进行对比。结果表明,在亚欧非地区,BDS-3卫星数与空间几何构型优于GPS和Galileo。BDS-3单频中,B1C、B1I、B2a、B3I的水平与高程定位精度均在米级,与GPS和Galileo对比的定位精度关系为B1C > B1I > L1 > B3I > B2a > E1 > L2 > E5a;BDS-3双频组合中,B2aB3I定位精度较差,不适合进行定位,B1CB2a、B1CB3I、B1IB2a、B1IB3I定位精度较优,与GPS和Galileo对比的定位精度关系为B1CB2a > B1CB3I > L1L2 > B1IB3I > B1IB2a > E1E5a > B2aB3I;BDS-3三频组合中,B1IB2aB3I、B1CB2aB3I的水平定位精度优于1 m,高程定位精度优于2 m,与GPS和Galileo对比的定位精度关系为B1CB2aB3I > B1IB2aB3I > L1L2L5 > E1E5aE5b。B1CB3I、B1IB3I、B1CB2a、B1IB2a适合利用非组合模型进行定位,B2aB3I适合利用无电离层模型进行定位,B1IB2aB3I和B1CB2aB3I适合利用非组合模型定位。BDS-3在全球范围内定位性能较优,甚至部分频率定位性能优于GPS和Galileo。

     

    Abstract:
      Objectives  BeiDou navigation satellite system (BDS) officially opened its global service and it is essential to evaluate the BDS-3 global positioning performance in detail. Based on multi-day measured data from 16 MGEX tracking stations around the world.
      Methods  Net_Diff software was used to carry out the single point positioning solution experiment by BDS-3 single-frequency, dual-frequency non-combined and ionospheric-free-combined pseudorange, and triple-frequency non-combined and ionospheric-free-pairwise pseudorange.
      Results  The results show that the number of satellites and spatial geometry of BDS-3 in Asia, Europe and Africa are better than GPS and Galileo. In single-frequency, the horizontal and vertical positioning accuracy of B1C, B1I, B2a and B3I is at m level. Compared with GPS and Galileo, the positioning accuracy relationship is B1C > B1I > L1 > B3I > B2a > E1 > L2 > E5a. In dual-frequency combination, B2aB3I has a poor positioning accuracy and is not suitable for positioning. But B1CB2a, B1CB3I, B1IB2a and B1IB3I have better positioning accuracies. Compared with GPS and Galileo, the positioning accuracy relationship is B1CB2a > B1CB3I > L1L2 > B1IB3I > B1IB2a > E1E5a > B2aB3I. In triple-frequency combination, the positioning accuracy of B1IB2aB3I and B1CB2aB3I is better than 1 m in horizontal direction, and is better than 2 m in altitude direction. Compared with GPS and Galileo, the positioning accuracy relationship is B1CB2aB3I > B1IB2aB3I > L1L2L5 > E1E5aE5b. B1CB3I, B1IB3I, B1CB2a, B1IB2a are suitable for positioning using non-combined models, B2aB3I is suitable for positioning using ionospheric-free models, and B1IB2aB3I and B1CB2aB3I are suitable for positioning using non-combined models.
      Conclusions  BDS-3 has better positioning performance on a global scale, even better than GPS and Galileo in some frequency.

     

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