GBAS参考接收机精度对一致性监测影响研究

为研究GBAS参考接收机精度对多参考接收机一致性影响,通过理论推导和仿真验证,建立参考接收机定位精度与多参考接收机一致性(B值)之间的关系。通过接收机数据采集实验,并依据上述理论对GNSS参考接收机伪距等原始观测数据进行处理以及作图分析。实验结果发现随着定位精度提高B值变小,即参考接收机一致性提高。在此基础上给出了一般情况下,满足连续性要求的地基增强系统(GBAS)参考接收机水平定位精度应在0.1 m左右(即分米级)。该实验结果可在GBAS试验时为参考接收机选取提供参考。

The research on impact of GBAS reference receivers position accuracy on monitoring of their consistency

In order to research impact of GBAS reference receivers position accuracy on monitoring of their consistency, through theoretical analysis and simulation, connection of reference receiver positioning accuracy and consistency of multiple reference receivers (B values) is founded. By performing receiver experimental of data acquisition, processing and mapping analysis on data of GNSS receiver like pseudorange etc, conclusion that as position accuracy is improved, B value becomes smaller is found. Generally, on this basis, ground-based augmentation system (GBAS) reference station receiver horizontal positioning accuracy range is given, which meets the requirements of the continuity. When GBAS test is performed, all of this can provide references and suggestions to select reference receiver.