Initial assessment of BeiDou-3 global navigation satellite system: signal quality, RTK and PPP
Initial assessment of BeiDou-3 global navigation satellite system: signal quality, RTK and PPP
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DOI：
10.1007/s10291-019-0905-4
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发表时间：
2019-10-01
期刊：
影响因子：
4.9
通讯作者：
Jiang, Shiqi
中科院分区：
文献类型：
--
作者：
Zhang, Zhiteng;Li, Bofeng;Jiang, Shiqi
中国最近建立了北斗三号全球导航卫星系统（BDS-3）的主要星座。有必要对其绩效进行全面评估。基于两个可跟踪北斗三号所有开放信号的Trimble Alloy接收机采集的数据集，评估了信号质量、模糊分辨效率和实时运动学（RTK）性能。然后，将使用BDS-2和BDS-3联合测量的精确点定位（PPP）与仅使用BDS-2的PPP进行比较，其中使用全球分布的116个监测站确定精确的卫星轨道和时钟。结果表明，北斗三号系统的信号质量总体优于北斗二号系统。同时，结合BDS-3的测量数据，RTK的歧义分辨效率得到了提高，成功率从88.5%提高到91.4%。在PPP方面，收敛时间从1小时左右缩短到不到半小时，定位精度也有明显提高。
China has recently established the primary constellation of BeiDou-3 global navigation satellite system (BDS-3). It is necessary to conduct a comprehensive assessment about its performance. The signal quality, ambiguity resolution efficiency and real-time kinematic (RTK) performance are assessed based on the datasets collected with two Trimble Alloy receivers that can track all open signals of BDS-3. Then, the precise point positioning (PPP) using combined BDS-2 and BDS-3 measurements is compared with the PPP using BDS-2 only, where the precise satellite orbits and clocks are determined using 116 globally distributed monitor stations. The results show that the signal quality of BDS-3 is generally better than that of BDS-2. Also, the ambiguity resolution efficiency of RTK is improved by incorporating the BDS-3 measurements with success rate improving from 88.5 to 91.4%. Regarding PPP, the convergence time is shortened from about an hour to less than half an hour, while the positioning accuracy is also improved significantly.