基于北斗多普勒单点测速精度分析  

Precision Analysis of BDS Absolute Velocity Determination

作　　者：张宇冉 孟凡效 丁乐乐[1] 惠孟堂[2] ZHANG Yuran;MENG Fanxiao;DING Lele;HUI Mengtang(Tianjing Institute of Geotechnical Inverstigation Surveying,Tianjing 300191,China;GNSS Research Center,Wuhan University,Wuhan 430079,China)

机构地区：[1]天津市勘察院,天津300191 [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》2018年第5期76-78,103,共4页Journal of Geomatics

基　　金：国家自然科学基金资助项目(41174028)

摘　　要：阐述了多普勒频移的产生机制,分析了北斗不同频率上的多普勒测速原理和多普勒测速中各种误差的影响。最后采用北斗实测数据对B1、B2和B3上的多普勒观测值分别进行了多普勒测速解算,通过对测速结果的对比分析可知,B2和B3原始多普勒观测值的测速精度比B1分别高28.4和31.3%,B2和B3导出多普勒观测值的测速精度均比B1高71.4%。This paper first describes the generative mechanism of Doppler shift,and analyzes the influences of Doppler velocity measurement principle and Doppler velocities on different frequencies of BDS.Then uses the testing data of BDS to caculate the Doppler velocities of B1,B2 and B3 separately and reveals that the accuracy of the original Doppler observations of B2 and B3 was 28.4 and 31.3% higher than that of B1 respectively,B2 and B3 derived Doppler observations velocity accuracy are 71.4% higher than that of B1.

关 键 词：BDS 多普勒频移 单点测速 多普勒观测值 

分 类 号：P228[天文地球—大地测量学与测量工程]