大地测量与地球动力学2018，Vol.38Issue(6)：568-570,576,4.DOI:10.14075/j.jgg.2018.06.004
Helmert方差分量估计在GPS/GLONASS/BDS组合定位权比确定中的应用
Application of Helmert Variance Component Estimation in GPS/GLONASS/BDS Combined Positioning Weight Determination
摘要
Abstract
It is difficult to get the optimal result using empirical weight ratio in combination positioning,due to differences in observation noise and orbit accuracy between GNSS systems.Based on this,Helmert variance component estimation is introduced into GPS/GLONASS/BDS combined positioning,determining the reasonable weight ratio of the GPS/GLONASS/BDS combined single point positioning and baseline solution.Based on a set of experimental data,the experimental results show that the method can reasonably determine the weight ratio of the observations of the GPS/GLONASS/BDS combined positioning.The optimal weight ratio of pseudo-range observations is 5∶1∶1,the optimal weight ratio of phase observations is 1 ∶ 1 ∶ 1,which improves the accuracy and reliability of the GPS/GLONASS/BDS combined positioning.关键词
GNSS/Helmert方差分量估计/权比/精度/可靠性Key words
GNSS/Helmert variance component estimation/weight ratio/accuracy/reliability分类
天文与地球科学引用本文复制引用
刘金海,涂锐,张睿,张鹏飞,卢晓春..Helmert方差分量估计在GPS/GLONASS/BDS组合定位权比确定中的应用[J].大地测量与地球动力学,2018,38(6):568-570,576,4.基金项目
国家重点研发计划(2016YFB0501804) （2016YFB0501804）
国家自然科学基金(41504006,41674034) （41504006,41674034）
中国科学院百人计划(Y620YC1701) （Y620YC1701）
前沿科技重点研发计划(QYZDB-SSW-DQC028).National Key Research and Development Program of China,No.2016YFB0501804 （QYZDB-SSW-DQC028）
National Natural Science Foundation of China,No.41504006,41674034 （）
One Hundred Person Project of CAS,No.Y620YC1701 （）
The Frontier Science Research Project,No.QYZDB-SSW-DQC028. （）
