Analysis of relative positioning accuracy of BDS-3 short baseline
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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.Abstract: 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 227th 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.
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Key words:
- BDS-3 /
- relative positioning /
- short baseline /
- accuracy
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