摘要
采用精密单点定位和相位历元间差分法分别评估普通航段和库区航段BDS/GNSS的定位和测速性能。结果表明,在普通航段,BDS-2定位精度为0.1~0.2 m;GPS、BDS-3、BDS全系统的定位精度相对较高,水平方向优于0.07 m,垂直方向优于0.09 m,测速精度相当,均在mm/s级;BDS/GPS、GPS/GLONASS/BDS/Galileo组合后,定位和测速精度相较于单系统提升约30%。在库区航段,GPS定位精度严重下降,水平方向为0.6 m;BDS-3与BDS全系统定位精度略有下降;多系统组合后,定位和测速精度受周围环境影响程度较低,与普通航段基本相当。
This paper assesses performance of BDS/GNSS on positioning and velocity measurement in normal waterway and reservoir waterway by precise point positioning and time-differenced carrier phase,respectively.The results show that,in normal waterway,the positioning accuracy of BDS-2 is 0.1-0.2 m.GPS,BDS-3 and BDS achieve positioning accuracy better than 0.07 m and 0.09 m on the horizontal and vertical direction,respectively.Their velocity accuracy reaches the mm/s level.Compared with signal system,positioning and velocity accuracy are improved by 30%for BDS/GPS,GPS/GLONASS/BDS/Galileo.In reservoir waterway,the accuracy of GPS is severely weakened,resulting in a 0.6 m positioning accuracy on horizontal direction.The positioning accuracy of BDS-3 and BDS is slightly reduced.After combination of multiple systems,environmental influence on positioning and velocity accuracy is substantially reduced to basically the same as the normal waterway.
作者
杨军岭
刘克中
郑凯
李万里
陈默子
YANG Junling;LIU Kezhong;ZHENG Kai;LI Wanli;CHEN Mozi(School of Navigation,Wuhan University of Technology,1178 Heping Road,Wuhan 430063,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2022年第5期466-471,共6页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(42104015,51979216)
中央高校基本科研业务费专项(WUT213112003)。
关键词
BDS/GNSS
精密单点定位
相位历元间差分法
测速
内河
BDS/GNSS
precise point positioning
time-differenced carrier phase
velocity estimation
inland river
