BDS-3三频PPP收敛速度与定位精度分析  

Convergence Speed and Positioning Accuracy Analysis of BDS-3 Triple-frequency PPP

作　　者：杨世超 YANG Shichao(Xining Land Surveying and Planning Research Institute Co.,Ltd.,Xining 810000,China)

机构地区：[1]西宁市国土勘测规划研究院有限公司,青海西宁810000

出　　处：《地理空间信息》2023年第6期79-81,123,共4页Geospatial Information

基　　金：西宁市科技计划项目(2019-Y-12)。

摘　　要：为详细评估BDS-3三频精密单点定位性能,基于多个MGEX跟踪站数据,采用三频无电离层两两组合模型进行数据解算,从定位精度与收敛性两个方面分析了BDS-3三频PPP定位性能。实验结果表明,2种三频组合PPP静态模式下水平定位精度优于2 cm,高程精度在2 cm左右,收敛时间在60 min左右;PPP动态模式E方向精度在2 cm左右,N方向精度在2 cm左右,高程精度优于4 cm,收敛时间在140 min左右。无论哪种模式下三频组合定位精度收敛时间与定位精度相比双频都有较明显的改善,可为今后BDS-3精密单点定位提供新的频率组合定位思路。In order to evaluate the performance of BDS-3 triple-frequency PPP in detail,based on the data of multiple MGEX tracking stations,we used the triple-frequency non-ionospheric pairwise combination model to solve the data,and analyzed the positioning performance of BDS-3 tri-ple-frequency PPP from the two aspects of positioning accuracy and convergence.The experimental results show that the horizontal positioning ac-curacy of two triple-frequency combined PPP static modes is better than 2 cm,the elevation accuracy is about 2 cm,and the convergence time is about 60 min.The PPP dynamic mode E direction accuracy is about 2 cm,N direction accuracy is about 2 cm,the elevation accuracy is better than 4 cm,and the convergence time is about 140 min.No matter which mode,the convergence time of triple-frequency combination positioning accu-racy is significantly improved compared with the dual-frequency positioning accuracy,which can provide a new frequency combination position-ing idea for the future BDS-3 PPP.

关 键 词：BDS-3 三频 PPP 精度 收敛时间 

分 类 号：P228[天文地球—大地测量学与测量工程]