高铁轨道基准网3维构网测量及其平差方法

Three-Dimensional Network Measurement and Adjustment Method for High-Speed Railway Track Reference Network

针对当前高速铁路轨道基准网存在的不足,提出了一种基于3维自由测站交会构网的轨道基准网测量及其数据处理的新方法。首先采用边角网间接平差的严密精度估算方法,对轨道基准网的点间相对精度进行仿真计算;然后结合西南交通大学轨道基准网实验网实测数据,采用自检校3维网平差方法进行数据处理。通过仿真计算和对实验数据的计算分析,认为构网法可以用于轨道基准网3维网测量及其数据处理。而且该方法严谨、效率更优,可供有关部门参照和借鉴。

A new method based on 3D free station intersection network was proposed,which considering the shortage of the existing measurement method of high-speed railway track reference network.A rigorous method for accuracy estimation based on the parameter adjustment of side-angle measurement network was proposed,and a simulated test was performed to investigate the relative accuracy of adjacent points.Then,combined with the measured data of experimental network in the Southwest Jiaotong University,a method with three-dimensional selfcalibrating adjustment was used for data processing.Through the simulation and analysis of the experiment data,it was show that the new method can be used for measuring and data processing of track reference network,and the method was so rigorous and efficient that relevant department can reference and use.