| 澳大利亚地区GPS/BDS实时精密单点定位性能分析 |
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| 引用本文： | 杨行言,高雅萍,杨立财,阿苦建英.澳大利亚地区GPS/BDS实时精密单点定位性能分析[J].北京测绘,2020(2):265-268. |
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| 作者姓名： | 杨行言 高雅萍 杨立财 阿苦建英 |
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| 作者单位： | 成都理工大学地球科学学院 |
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| 摘 要： | 本文选取了均匀分布于澳大利亚的6个IGS跟踪站,用序贯最小二乘法进行参数估计,利用从MGEX下载的最终轨道和钟差产品进行GPS RT-PPP、BDS RT-PPP、GPS+BDS RT-PPP静态测站仿真实时解算,得出所有测站的定位性能数据。实验表明:在澳大利亚地区,GPS RT-PPP和GPS+BDS RT-PPP在E、N方向平均定位精度可以达到5 cm,且在20 min左右即可完成收敛,在U方向平均定位精度可达10 cm,收敛时间为25 min左右;该地区的BDS RT-PPP定位精度低于前两者,在E、N方向平均定位精度可以达到10 cm,且收敛时间约为25 min,在U方向平均定位精度20 cm,收敛时间超过30 min,达到34 min。
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| 关 键 词： | 参数估计 实时精密单点定位 定位精度 收敛时间 |
GPS/BDS RT-PPP Positioning Performance Analysis In Australia |
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| Institution: | (School of Earth Sciences Chengdu University of Technology, Chengdu Sichuan 610059, China) |
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| Abstract: | This paper selects 6 IGS tracking stations evenly distributed in Australia uses the sequential least square method for paraneter estimation,and uses GPS and RT-PPP,BDS RT-PPP,GPS+BDS RT-PPP static station simulation real-time using the final orbit and clock products downloaded from MGEX.Solve and obtain the positioning performance data of all stations.Experiments show that in Australia,GPS RT-PPP and GPS+BDS RT-PPP can achieve an average positioning accuracy of 5 cm in the E and N directions,and convergence can be completed in about 20 minutes.The average positioning accuracy in the U direction can reach 10 cm.The time is about 25 min;the BDS RT-PPP positioning accuracy in this area is lower than the former two.The average positioning accuracy in the E and N directions can reach 10 cm,and the convergence time is about 25 min.The average positioning accuracy in the U direction is 20 cm,and the convergence time exceeds 30 min,reaching 34 min. |
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| Keywords: | parameter estimation Real Time-Precision Point Positioning(RT-PPP) positioning accuracy convergence time |
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