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BDS multi-frequency PPP ambiguity resolution with new B2a/B2b/B2a + b signals and legacy B1I/B3I signals
Journal of Geodesy ( IF 3.9 ) Pub Date : 2020-10-01 , DOI: 10.1007/s00190-020-01439-8
Xin Li , Xingxing Li , Gege Liu , Yongqiang Yuan , Mohamed Freeshah , Keke Zhang , Feng Zhou

As of December 2019, the core constellation of BeiDou Navigation Satellite System with global coverage (BDS-3) has been fully deployed with 24 MEO, 3 IGSO and 1 GEO satellites. In addition to the legacy B1I and B3I signals, BDS-3 satellites are capable of transmitting several new navigation signals, including B1C, B2a, B2b and B2a + b. The multi-frequency signals of BDS-3 bring new opportunities for fast ambiguity resolution (AR) of BDS precise point positioning (PPP). In this contribution, the BDS five-frequency PPP AR method was developed and the benefits of BDS-3 multi-frequency signals for precise positioning were investigated. The multi-frequency uncalibrated phase delay (UPD) products were estimated firstly using observations from 222 Multi-GNSS Experiment stations. The extra-wide-lane, wide-lane and narrow-lane UPDs of BDS-3 exhibit high stability with standard deviations less than 0.1 cycle. With the derived UPD products, five-frequency PPP AR was conducted at 12 static stations and a moving vehicle. The time to first fix of BDS PPP AR was shortened to 25.5 min with multi-frequency observations, showing improvement of 25.4% when compared to dual-frequency PPP AR. Moreover, instantaneous PPP wide-lane ambiguity resolution (WAR) can be achieved with success rate of over 90%. A fast decimeter-level accuracy can be achieved for BDS five-frequency PPP WAR with positioning accuracy improved by 68%-82% compared to PPP float solutions. The vehicle-borne experiment further demonstrates that BDS PPP WAR is potential to maintain decimeter-level positioning accuracy even in a complex environment.

中文翻译:

BDS 多频 PPP 模糊度解决方案,具有新的 B2a/B2b/B2a + b 信号和传统 B1I/B3I 信号

截至2019年12月,全球覆盖的北斗卫星导航系统(BDS-3)核心星座已全面部署,24颗MEO、3颗IGSO和1颗GEO卫星。除了传统的 B1I 和 B3I 信号外,BDS-3 卫星还能够传输多种新的导航信号,包括 B1C、B2a、B2b 和 B2a + b。北斗三号的多频信号为北斗精密单点定位(PPP)的快速模糊度分辨(AR)带来了新的机遇。在此贡献中,开发了 BDS 五频 PPP AR 方法,并研究了 BDS-3 多频信号对精确定位的好处。多频未校准相位延迟 (UPD) 产品首先使用来自 222 个多 GNSS 实验站的观测结果进行估计。超宽车道,BDS-3 的宽车道和窄车道 UPD 表现出高稳定性,标准偏差小于 0.1 个循环。使用衍生的 UPD 产品,在 12 个静态站点和移动车辆上进行了五频 PPP AR。通过多频观察,BDS PPP AR 的首次定位时间缩短至 25.5 分钟,与双频 PPP AR 相比提高了 25.4%。此外,可以实现瞬时 PPP 宽车道模糊度分辨率(WAR),成功率超过 90%。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。1 个周期。使用衍生的 UPD 产品,在 12 个静态站点和一辆移动车辆上进行了五频 PPP AR。通过多频观察,BDS PPP AR 的首次定位时间缩短至 25.5 分钟,与双频 PPP AR 相比提高了 25.4%。此外,可以实现瞬时 PPP 宽车道模糊度分辨率(WAR),成功率超过 90%。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。1 个周期。使用衍生的 UPD 产品,在 12 个静态站点和移动车辆上进行了五频 PPP AR。通过多频观察,BDS PPP AR 的首次定位时间缩短至 25.5 分钟,与双频 PPP AR 相比提高了 25.4%。此外,可以实现瞬时 PPP 宽车道模糊度分辨率(WAR),成功率超过 90%。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。通过多频观察,BDS PPP AR 的首次定位时间缩短至 25.5 分钟,与双频 PPP AR 相比提高了 25.4%。此外,可以实现瞬时 PPP 宽车道模糊度分辨率(WAR),成功率超过 90%。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。通过多频观察,BDS PPP AR 的首次定位时间缩短至 25.5 分钟,与双频 PPP AR 相比提高了 25.4%。此外,可以实现瞬时 PPP 宽车道模糊度分辨率(WAR),成功率超过 90%。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。北斗五频PPP WAR快速达到分米级精度,定位精度较PPP浮动方案提升68%-82%。车载实验进一步证明,北斗PPP WAR即使在复杂环境下也具有保持分米级定位精度的潜力。
更新日期:2020-10-01
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