摘要
我国北斗卫星导航系统(BDS)已经进入第三阶段北斗三号(BDS-3)的建设,其定位精度问题一直是全球关注的热点.本文基于IGS连续跟踪站2018年第227天多模全球卫星导航系统(GNSS)数据,对短基线进行动态处理,将BDS-3的相对定位精度与北斗二号(BDS-2)的相对定位精度进行分析.结果表明,目前BDS-3短基线相对定位精度E方向优于3 cm,N方向优于3.5 cm,U方向优于10 cm,三个方向精度略高于BDS-2短基线相对定位精度.
With the continuous development of China BeiDou Navigation Satellite System(BDS), it has entered the third stage of construction, and its positioning accuracy has always been a hot topic of global concern. Based on the multi-mode GNSS data of the IGS continuous tracking station on the 227 th day of 2018, this paper dynamically processes the short baseline, analyzes the relative positioning accuracy of the BDS-3 system, and analyzes the relative positioning accuracy of the BDS-2. The results show that the relative positioning accuracy of the short-baseline of BDS-3 is better than 3 cm in the E direction, the N direction is better than 3.5 cm, and the U direction is better than 10 cm. The accuracy in the three directions is slightly higher than the short positioning accuracy of the BDS-2 short baseline.
作者
郑爽
王世杰
ZHENG Shuang;WANG Shijie(Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou 730070,China;National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Vocational College of Energy And Chemical Industry,Lanzhou 730207,China)
出处
《全球定位系统》
CSCD
2020年第1期61-65,共5页
Gnss World of China
基金
国家自然科学基金(41861061)
兰州交通大学优秀研究平台支持(201806)。
关键词
BDS-3
相对定位
短基线
精度
BDS-3
relative positioning
short baseline
accuracy
