运营高铁GNSS网复测起算基准兼容性分析及更新方法研究

Research on compatibility analysis and updating method of initial base for re-measurement of high-speed railway GNSS network

以某运营高速铁路精测网复测采用GNSS方式观测的CPⅡ控制网数据为例,利用几种不同的兼容性分析方法分别对该网起算点进行兼容性分析,对于检验出的不兼容起算点,选择采用同精度内插法对其坐标进行更新处理,再作为起算基准使用,从而既保证了GNSS网成果的可靠性,也保证运营高铁精测网原复测成果的可对比性、可分析性,此方法对运营高铁GNSS网复测数据处理具有一定的参考意义。

Taking the route horizontal control network(CPⅡ)data observed by GNSS mode in the retest of a high-speed railway precise measurement network as an example,several different compatibility analysis methods are used to analyze the starting point of the control network.For the incompatible starting point,the same precision interpolation method is used to update the coordinate processing,then as the starting benchmark.Thus,this method not only guarantees the reliability of the results of the GNSS network,but also ensures the comparability and analytic nature of the original complex results of the high-speed railway precision measurement network.This method has certain reference significance for the operation of data processing for the complex measurement of high-speed rail GNSS network.