测绘科学技术学报2017，Vol.34Issue(1)：10-14,18,6.DOI:10.3969/j.issn.1673-6338.2017.01.003
GNSS观测值统一表达及组合PPP解算性能分析
Uniform Expression of Multi-GNSS Observation and Performance Analysis of the Combined Precise Point Positioning
摘要
Abstract
In order to evaluate the performance of multi-GNSS precise point positioning,the uniform expression of multi-GNSS observation is first derived.Then,the UofC function and stochastic models are introduced.Finally,the static solutions of seven different PPP models are obtained based on the observations from 6 IGS tracking stations.The statistical results show that the GPS/GLONASS/BDS PPP has a best convergence percentage when the observation duration is short.For the 1 h-duration observation data sets,the convergence percentage and mean convergence time of GPS/GLONASS/BDS PPP are 91.7% and 16.1 min,respectively.While the convergence percentage and mean convergence times of BDS PPP are 32.7% and 38.4 min,which is the worst.Moreover,the position biases and standard deviations for the GPS/GLONASS/BDS PPP are both better than (0.3,0.5) cm and (1.9,4.3) cm respectively in north and east direction,and the accuracy in the up direction is low because of the strong correlation between the up component and the tropospheric delay.关键词
精密单点定位/GPS/GLONASS/BDS组合/函数模型/收敛性能/定位精度Key words
precise point positioning/GPS/GLONASS/BDS/function model/convergence performance/positioning accuracy分类
天文与地球科学引用本文复制引用
张翠英,赵兴旺..GNSS观测值统一表达及组合PPP解算性能分析[J].测绘科学技术学报,2017,34(1):10-14,18,6.基金项目
国家自然科学基金项目(41404004 （）
41474026) （）
安徽省自然科学基金项目(1408085QD72) （1408085QD72）
安徽省博士后基金项目(2015B044) （2015B044）
安徽理工大学校青年基金项目(QN201512). （QN201512）
