高速铁路CP0框架控制网数据处理模式与方法研究

Research on Data Processing of High-speed Railway CPO Frame Control Network

框架控制网(CP0)作为高速铁路平面控制测量的起算基准,必须确保其具有较高的精度、可靠性和稳定性。影响CP0最终定位结果的因素较多,如不能正确考虑并处理这些因素,将造成最终定位结果出现较大偏差无法满足精度要求。结合相关项目的测量数据及实践经验,对CP0数据处理模式与方法进行研究分析与总结归纳,在此基础上就基线解算系统误差的消除和削弱,基线解算方案和软件的合理选择,如何进行框架基准的统一与转换,以及基线网平差等方面提出一些原则和方法,不仅解决了CP0框架基准的统一问题,也提高了基线解算的可靠性和精度。

The CP0 frame control network, which acts as the initial datum of plane control surveying for high-speed railway, has to be provided with higher accuracy, reliability and stability. There are many factors affecting the final positioning results of CP0 . As failure to properly address these factors may result in large deviation in specified positioning, researches and summarization of data processing mode and method for CP0 are conducted with reference to the real data and practical experiences of related projects, and several principles and methods are proposed to eliminate and reduce systematic errors to baseline resolution, to select reasonable processing scheme and software, and to perform a frame datum uniformity as well as conversion and baseline network adjustment, which, as a result, can solve the problem of frame datum uniformity and improve the reliability and accuracy of the baseline solution.