多普勒、载波和伪距差分法的北斗三号车载测速精度分析  

BeiDou-3 Based Vehicle Velocity Accuracy Analysis with Doppler,Carrier Phase and Pseudo-Range Differential Method

作　　者：邓广梓淳 耿涛[2] DENG Guangzichun;GENG Tao(School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;GNSS Research Center,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]武汉大学卫星导航定位技术研究中心,湖北武汉430079

出　　处：《测绘地理信息》2023年第6期46-50,共5页Journal of Geomatics

基　　金：国家自然科学基金(41974036);湖北省自然科学基金(2019CFA051)。

摘　　要：针对新建成的北斗全球卫星导航系统,基于多普勒测速、伪距差分测速、载波相位差分等3种测速方法,对不同运动状态下的车载实测数据进行测速精度分析。结果表明:3种方法在95.5%置信度下的测速精度优于0.1 m/s;运动状态静态时载波相位差分测速的精度能达到mm/s量级,而动态时多普勒测速的精度较高,伪距差分测速在静态和动态时测速精度较低。For the newly built BeiDou satellite navigation sys⁃tem,the paper analyzes the velocity accuracy of on-vehicle measured data using three methods:Doppler velocimetry,pseudo-range differential velocimetry and carrier phase differ⁃ential velocimetry,and compares the velocity accuracy in dif⁃ferent motion status.The results show that the velocity accu⁃racy of these three methods is better than 0.1 m/s at 95.5%confidence level.The accuracy of carrier phase differential ve⁃locimetry can reach up to mm/s in the static mode,and the ac⁃curacy of Doppler velocimetry is the best in the dynamic mode,while the accuracy of pseudo-range differential velo⁃cimetry is the worst in both static and dynamic modes.

关 键 词：全球卫星导航系统 测速 多普勒 载波相位差分 伪距差分 

分 类 号：P228[天文地球—大地测量学与测量工程]