高速铁路GNSS框架控制网平差基准一致性检验  

Consistency test of adjustment datum for GNSS frame control network of high-speed railway

作　　者：王剑辉 尹彤 赵有兵[3] 张莹 李旭洋 WANG Jianhui;YIN Tong;ZHAO Youbing;ZHANG Ying;LI Xuyang(Geology Surveying and Mapping Institute of Guangdong,Guangzhou 510800,China;Institute of Surveying and Mapping Standardization,Ministry of Natural Resources,Xi’an 710054,China;China Railway Er yuan Engineering Group.Co.Ltd.,Chengdu 610031,China;The First Topographic Surveying Brigade,Ministry of Natural Resources,Xi’an 710054,China)

机构地区：[1]广东省地质测绘院,广州510800 [2]自然资源部测绘标准化研究所,西安710054 [3]中铁二院工程集团有限责任公司,成都610031 [4]自然资源部第一地形测量队,西安710054

出　　处：《导航定位学报》2021年第4期40-44,共5页Journal of Navigation and Positioning

摘　　要：为了提高高速铁路框架控制网(CP0)坐标平差计算的精度,提出一种高速铁路全球卫星导航系统(GNSS)框架控制网平差基准一致性检验方法:在高速铁路CP0基线解算后的坐标松弛解中,使用赫尔默特(Helmert)模型对高等级已知点稳定性进行一致性检验;探测并剔除掉有问题的高等级已知点,使CP0解算中避免引入基准误差。实验结果表明,通过与约束平差的卡方检验指标的对比,利用Helmert模型计算残差来发现和定位有问题的基准站是可行的。In order to improve the accuracy of coordinate adjustment in calculation of high-speed railway frame control network(CP0),the paper proposed a detection method of adjustment datum consistency for high-speed railway GNSS CP0:Helmert model was used to check the stability of high-level known control points in the coordinate relaxation solution after high-speed railway CP0 baseline calculation;and the high-level anomaly points were detected and eliminated for avoiding inputting datum error in CP0 calculation.Experimental result showed that by comparing with the chi-square test index of constraint adjustment,Helmert model could be used to calculate the residual for finding and locating the anomaly reference stations with its feasibility.

关 键 词：高速铁路 框架控制网 赫尔默特模型 基准一致性 

分 类 号：P228[天文地球—大地测量学与测量工程]