摘要
全球导航卫星系统(GNSS)的快速发展提供了多样化的数据,多频多模精密单点定位(PPP)是今后定位的重要趋势。现对4种不同组合(GPS+BDS/GPS+Galieo/BDS+Galieo/GPS+Galieo+BDS)多频多模PPP定位性能进行评估,借助MGEX跟踪站中12个观测站60d观测数据进行静态、动态实验。结果表明,4种不同组合多频多模PPP结果均为厘米级,GPS+BDS、GPS+Galieo和BDS+Galieo双系统组合定位在N、E、U方向定位精度基本相当,且在U方向定位精度最差,三系统(GPS+Galieo+BDS)PPP结果可提高静态、动态定位精度,其中静态定位在N、E、U方向上的平均定位精度分别提升10.98%、11.82%、9.18%,动态定位在N、E、U方向上平均定位精度分别提升10.96%、7.52%、8.23%,多频多模PPP对城市复杂环境定位精度有提升效果。
The rapid development of the Global Navigation Satellite System(GNSS)provides a variety of data.Multi-frequency and multimode precision single point positioning(PPP)is an important trend for future positioning.Now,the performance of four different combinations(GPS+BDS/GPS+Galileo/BDS+Galileo/GPS+Galileo+BDS)multi-frequency and multimode PPP positioning is evaluated.Static and dynamic experiments are carried out with the help of 60 day observation data from 12 stations in the MGEX tracking station.The experimental results show that the four different combinations of multi-frequency and multi-mode PPP results are of centimeter level.The positioning accuracy of GPS+BDS,GPS+Galileo and BDS+Galileo dual-system combination positioning in the N,E and U directions is basically the same,and the positioning accuracy in the U direction is the worst.The PPP results of the three systems(GPS+Galileo+BDS)can improve the static and dynamic positioning accuracy,in which the average positioning accuracy of static positioning in the N,E and U directions can be increased by 10.98%,11.82%and 9.18%respectively,and the dynamic positioning accuracy in the direction of N,E and U can be improved by 10.96%,7.52%and 8.23%respectively.Multi-frequency and multimode PPP can improve the positioning accuracy in urban complex environment.
作者
杜文博
支长城
陈永贵
Du Wenbo;Zhi Changcheng;Chen Yonggui(South-to-North Water Transfer Middle Route Information Technology Co.,Ltd.,Beijing 100038,China;Zhongjia Survey and Design Co.,Ltd.,Shijiazhuang 050000,China;Henan Collage of Surveying and Mapping,Zhengzhou 451464,China)
出处
《工程勘察》
2025年第1期48-53,共6页
Geotechnical Investigation & Surveying
基金
河南省软科学研究计划项目(232400410333).
关键词
全球导航卫星系统
多频多模
非差非组合
卡尔曼滤波
精密单点定位
Global Navigation Satellite System
multi-frequency and multi-mode
non-difference and non-combination
Kalman filtering
precise point positioning
作者简介
杜文博(1984-),男(汉族),河北石家庄人,硕士,高级工程师.E-mail:zw2022bj@163.com。
