GNSS多系统组合动态精密单点定位性能研究  

Study on Kinematic Precision Point Positioning Performance of GNSS Multi-system Combination

作　　者：高永刚[1,2,3] 吴观烨 郭金运 简文彬[1] 林晨[1] GAO Yonggang;WU Guanye;GUO Jinyun;JIAN Wenbin;LIN Chen(College of Environment and Safety Engineering,Fuzhou University,Fuzhou 350116,China;Key Laboratory of Geohazard Prevention of Hilly Mountains,Ministry of Natural Resources(Fujian Key Laboratory Of Geohazard Prevention),Fuzhou 350002,China;The Academy of Digital China(Fujian),Fuzhou 350108,China;College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]福州大学环境与安全工程学院,福建福州350116 [2]自然资源部丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室),福建福州350002 [3]数字中国研究院(福建),福建福州350108 [4]山东科技大学测绘空间信息学院,山东青岛266590

出　　处：《应用基础与工程科学学报》2022年第2期501-518,共18页Journal of Basic Science and Engineering

基　　金：福建省自然科学基金项目(2019J01649);国家自然科学基金项目(41861134011,41801393);自然资源部丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室)开放基金(FJKLGH2021K002)。

摘　　要：利用GFZ(Geo Forschungs Zentrum Potsdam)发布的GBM精密星历和钟差产品,以IGS(International GNSS Servic,IGS)周解文件中的测站坐标为参考,利用亚太地区8个IGS观测站的数据,分别以GPS、BDS、GLONASS和Galileo为基准系统进行静态多系统组合PPP(Precise Point Positioning,PPP)实验,获得了以GPS为基准的系统组合具有最优定位性能的结论.采用相同的数据源进行静态模拟动态的多系统组合PPP实验,研究表明:双系统组合与单系统相比能够显著提升定位性能,GPS/GLONASS组合的定位性能较优;多系统组合定位性能表现结果更优,尤其是GPS/GLONASS/BDS/Galileo组合水平方向外符合精度优于2cm,高程方向优于3.5cm.以PPK(Post Processed Kinematic,PPK)解算的移动站坐标为参考,对实测动态数据进行PPP解算实验并对结果进行定量评价,研究表明:GPS/GLONASS/BDS/Galileo组合定位性能最优,NEU三方向的RMSE分别为2.24cm、5.27cm、5.8cm,收敛时长分别为17.08min、22.35min、54.08min,与静态模拟动态结果相比,定位性能稍差.This work studied Precise Point Positioning(PPP)by using multi-system GNSS data with different-system combined forms according to the coordinates of the International GNSS Service(IGS)weekly solution.The work was also proceeded based on the data from the precise ephemeris and clocks of GBM products released by the Geo Forschungs Zentrum Potsdam(GFZ)and 8 IGS observation stations in the Asia-Pacific region.The optimal combination mode of multi-system combined PPP solution is obtained by taking the coordinates of the station in the IGS weekly solution as a reference.Simulation of dynamic multi system combination PPP shows that GPS positioning performed best in the single system,whereas dual system combination significantly improves the positioning performance compared with that of the single system.The GPS/GLONASS combination exhibits better positioning performance,while multi-system combination further increases the positioning accuracy.In particular,the accuracy in horizontal and vertical directions of GPS/GLONASS/BDS/Galileo is better than 2 and 3.5 cm,respectively.Quantitative evaluation on the PPP solution results using the Post Processed Kinematic(PPK)results as a reference indicates that the GPS/GLONASS/BDS/Galileo combination has the best positioning performance.Comparisons from the static simulation dynamic results suggest that the positioning performance becomes slightly worse when the root mean square error(RMSE)of NEU in the three directions are 2.24,5.27,5.8 centimeters,and the convergence time are 17.08,22.35,54.08 minutes,respectively.

关 键 词：GNSS 多系统组合 精密单点定位 收敛时长 定位精度 北斗导航卫星系统 

分 类 号：P228.4[天文地球—大地测量学与测量工程]