高铁CPⅡ交叉双导线网最小独立闭合环集确定方法  

Research on the determination method of least independent close loops in CP Ⅱ double traverse network of high-speed railway

作　　者：闫广峰 徐鑫 刘春燕 任洞宾 YAN Guangfeng;XU Xin;LIU Chunyan;REN Dongbin(School of Geography&Resources Science,Neijiang Normal University,Neijiang,Sichuan 641100,China;College of Physics and Electronic Information Engineering,Neijiang Normal University,Neijiang,Sichuan641100,China)

机构地区：[1]内江师范学院地理与资源科学学院,四川内江641100 [2]内江师范学院物理与电子信息工程学院,四川内江641100

出　　处：《测绘科学》2023年第8期57-63,共7页Science of Surveying and Mapping

基　　金：四川省大学生创新创业训练计划项目(X2021041);中国铁路兰州局集团有限公司科技研究开发计划项目(LZJKY2023033-1);中国博士后科学基金资助项目(2019M663555)。

摘　　要：针对高铁隧道段CPⅡ交叉双导线网观测数据粗差检核问题,该文在挖掘分析控制网结构特点基础上,提出一种CPⅡ交叉双导线网最小独立闭合环集搜索算法。该算法基于分治法思想,将整个控制网的独立闭合环搜索分解到各个四边形,通过确定各四边形产生的最小独立闭合环子集,实现CPⅡ交叉双导线网最小独立闭合环集的自动搜索。基于该算法研发了相关软件系统,并以某客运专线隧道CPⅡ网实测数据为例进行实验和分析。实验结果表明,该文方法可以高效确定CPⅡ交叉双导线网的最小独立闭合环集,从而实现对外业观测数据的粗差检核;重测含有粗差的观测值,可有效提高CPⅡ交叉双导线网的精度和可靠性。Aiming at the problem of gross errors checking,a least independent close loops search algorithm based on the analysis of the structural characteristics of CPI double traverse network in high-speed railway tunnel was proposed in this paper.Based on the idea of divide and conquer,the independent close loops searching of the total CPII double traverse network was decomposed into each quadrangle.By determining the least independent close loops subset generated by each quadrangle,the automatic searching of the least independent close loops set of CPII double traverse network was realized.Based on this algorithm,the relevant software system was developed,and the surveying data of CP II network in tunnel of a passenger dedicated line was taken as an example for experiment and analysis.The experimental results showed that this method could efficiently determine the least independent close loops set of CPII double traverse network,thus realizing the gross errors checking of field observations.The precision and reliability of CPI double traverse network could be effectively improved by remeasuring the observations with gross errors.

关 键 词：高速铁路 CPⅡ交叉双导线网 最小独立闭合环 粗差检核 

分 类 号：P228[天文地球—大地测量学与测量工程]