不同ISB模型对BDS-3/GPS精密单点定位性能的影响  

The Influence of Different ISB Models on the Performance of BDS-3/GPS Precision Single Point Positioning

作　　者：宋承骏 余学祥[1,2,3] 卢福康 SONG Chengjun;YU Xuexiang;LU Fukang(School of Space Information and Surveying Engineering,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Aviation-aerospace-ground Cooperative Monitoring and Early Warning of Coal Mining-induced Disasters of Anhui Higher Education Institutes,Anhui University of Science and Technology,Huainan 232001,China;Coal Industry Engineering Research Center of Mining Area Environmental and Disaster Cooperative Monitoring,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学空间信息与测绘工程学院,安徽淮南232001 [2]安徽理工大学矿山采动灾害空天地协同监测与预警安徽普通高校重点实验室,安徽淮南232001 [3]安徽理工大学矿区环境与灾害协同监测煤炭行业工程研究中心,安徽淮南232001

出　　处：《现代信息科技》2023年第17期32-35,39,共5页Modern Information Technology

基　　金：2021年度安徽省科技重大科技专项(202103a05020026)。

摘　　要：BDS-3卫星导航系统已成功完成正式组合,基于此对BDS-3与GPS两大卫星之间的ISB对PPP定位性能的影响进行评估。通过MGEX(Multi-GNSS Experiment)选取12个测站连续5天的观测数据进行分析,可以得出3种不同的ISB处理模型,最初ISB值变化较大,之后其值会达到一个稳定的状态。其中PPP-CT与PPP-RW两种计算出的ISB值基本相同,大于PPP-WN计算的值。对于静态定位性能,PPP-RW的定位精度高于PPP-CT和PPPWN;相比于PPP-CT,PPP-RW与PPP-WN在E、N、U方向上收敛时间有一定的提升;对于动态定位性能,PPP-RW的定位精度和PPP-CT的定位精度相当,均略高于PPP-WN,且3个模型的收敛时间处于同一个水平。The BDS-3 satellite navigation system has successfully completed its official integration,and based on this,the impact of ISB between BDS-3 and GPS on PPP positioning performance is evaluated.By using MGEX(Multi-GNSS Experiment)to select observation data from 12 stations for 5 consecutive days for analysis,three different ISB processing models can be obtained.Initially,the ISB value changes significantly,but later it reaches a stable state.The ISB values calculated by PPP-CT and PPP-RW are basically the same,greater than the values calculated by PPP-WN.For static positioning performance,the positioning accuracy of PPP-RW is higher than that of PPP-CT and PPP-WN;compared to PPP-CT,PPP-RW and PPP-WN have a certain improvement in convergence time in the E,N,and U directions;for dynamic positioning performance,the positioning accuracy of PPP-RW is comparable to that of PPP-CT,both slightly higher than that of PPP-WN,and the convergence time of the three models is at the same level.

关 键 词：PPP ISB 白噪声 常数估计 随机游走估计 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] P228.4[自动化与计算机技术—计算机科学与技术]