伪距单点定位(Pseudo-range Single Point Positioning,SPP)应用较早且广泛。随着GNSS相关技术的不断进步,伪距观测值与广播星历的精度也在不断提高,多GNSS系统还带来了更多的伪距观测值,SPP依然值得关注。RTKLIB作为一款广为接受的多功...伪距单点定位(Pseudo-range Single Point Positioning,SPP)应用较早且广泛。随着GNSS相关技术的不断进步,伪距观测值与广播星历的精度也在不断提高,多GNSS系统还带来了更多的伪距观测值,SPP依然值得关注。RTKLIB作为一款广为接受的多功能GNSS数据处理开源软件,是实现二次开发的良好平台,为此,本文对新版本RTKLIB(b34)SPP数据处理进行了解析,给出了其处理流程,分析了其平差求解、结果检验、异常检测的原理,指出了其优缺点,为今后借鉴或改进提供了参考。展开更多
The recent advances in GNSS positioning of the recent decades have been possible by the development of increasingly efficient software and online calculation tools. The differences between these online PPP calculation...The recent advances in GNSS positioning of the recent decades have been possible by the development of increasingly efficient software and online calculation tools. The differences between these online PPP calculation tools result in a different level of performance. Our study shows that for 24-hour or 6-hour observation time, the Canadian Spatial Reference System for PPP (CSRS-PPP), CenterPoint RTX Post-Processing (RTX), Magic/GNSS, Institut Geographique National-PPP (IGN-PPP) and RTKLIB tools have almost similar level of performance with International Terrestrial Reference Frame (ITRF) solutions considered as reference solution. Average deviations on the three components X, Y and Z for the different tools compared to ITRF solutions do not exceed 1 cm. However, the CSRS-PPP tool gives deviations of less than 5 mm. Calculations from the observations of 2 h and 1 h show that the RTX and CSRS-PPP tools keep deviations similar to those obtained with 24 h and 6 h, while RTKLIB and IGN-PPP give deviations exceeding 6 cm and sometimes failures of some calculations for IGN-PPP.展开更多
在无人机测绘生产中,GNSS定位涉及大量数据处理工作,而GAMIT、Bernese、Panda等精密软件对于生产单位人员来说较难掌握。本文综合利用TEQC(Translation,Editing and Quality Checking)、RTKLIB两种软件进行数据质量检核以及后处理基线解...在无人机测绘生产中,GNSS定位涉及大量数据处理工作,而GAMIT、Bernese、Panda等精密软件对于生产单位人员来说较难掌握。本文综合利用TEQC(Translation,Editing and Quality Checking)、RTKLIB两种软件进行数据质量检核以及后处理基线解算,以无人机测绘的实测数据为例,介绍PPK技术基本原理、软件使用方法并进行数据分析。结果表明:TEQC结合RTKLIB软件能够全面反映数据质量,给出问题原因,操作易于掌握。RTKLIB PPK功能,提升了定位精度、连续性和可靠性,能够满足一般工程测量要求,为无人机测绘GNSS测量成果提供保障。展开更多
文摘伪距单点定位(Pseudo-range Single Point Positioning,SPP)应用较早且广泛。随着GNSS相关技术的不断进步,伪距观测值与广播星历的精度也在不断提高,多GNSS系统还带来了更多的伪距观测值,SPP依然值得关注。RTKLIB作为一款广为接受的多功能GNSS数据处理开源软件,是实现二次开发的良好平台,为此,本文对新版本RTKLIB(b34)SPP数据处理进行了解析,给出了其处理流程,分析了其平差求解、结果检验、异常检测的原理,指出了其优缺点,为今后借鉴或改进提供了参考。
文摘The recent advances in GNSS positioning of the recent decades have been possible by the development of increasingly efficient software and online calculation tools. The differences between these online PPP calculation tools result in a different level of performance. Our study shows that for 24-hour or 6-hour observation time, the Canadian Spatial Reference System for PPP (CSRS-PPP), CenterPoint RTX Post-Processing (RTX), Magic/GNSS, Institut Geographique National-PPP (IGN-PPP) and RTKLIB tools have almost similar level of performance with International Terrestrial Reference Frame (ITRF) solutions considered as reference solution. Average deviations on the three components X, Y and Z for the different tools compared to ITRF solutions do not exceed 1 cm. However, the CSRS-PPP tool gives deviations of less than 5 mm. Calculations from the observations of 2 h and 1 h show that the RTX and CSRS-PPP tools keep deviations similar to those obtained with 24 h and 6 h, while RTKLIB and IGN-PPP give deviations exceeding 6 cm and sometimes failures of some calculations for IGN-PPP.
文摘在无人机测绘生产中,GNSS定位涉及大量数据处理工作,而GAMIT、Bernese、Panda等精密软件对于生产单位人员来说较难掌握。本文综合利用TEQC(Translation,Editing and Quality Checking)、RTKLIB两种软件进行数据质量检核以及后处理基线解算,以无人机测绘的实测数据为例,介绍PPK技术基本原理、软件使用方法并进行数据分析。结果表明:TEQC结合RTKLIB软件能够全面反映数据质量,给出问题原因,操作易于掌握。RTKLIB PPK功能,提升了定位精度、连续性和可靠性,能够满足一般工程测量要求,为无人机测绘GNSS测量成果提供保障。
