抗差Helmert分量估计在地铁CPⅢ控制网平差中的应用  

Application of Robust Helmert Component Estimation in Adjustmentof Metro CPⅢ Control Network

作　　者：朱武松[1] ZHU Wusong(Fuzhou Investigation and Surveying Institute Co.,Ltd.,Fuzhou 350108,China)

机构地区：[1]福州市勘测院有限公司,福建福州350108

出　　处：《城市勘测》2024年第2期133-136,共4页Urban Geotechnical Investigation & Surveying

摘　　要：为使CPⅢ控制网数据定权合理、提高平差成果精度,并具有抗粗差特性,论文提出采用结合Huber的Helmert抗差分量估计定权方法对CPⅢ控制网中的水平角、竖直角和斜距三类观测值进行合理定权平差,以福州市轨道交通4号线工程西门站至东街口站区间右线CPⅢ控制网测量项目为例,验证了该方法的定权合理性和可靠性,并可获得点位偏差小、精度可靠且有抗粗差能力的平差成果。In order to make the data weighting of CPⅢcontrol network reasonable,improve the accuracy of adjustment results,and have the characteristics of anti gross error,the paper proposes to use Huber’s Helmert robust component estimation weighting method to carry out reasonable weighting adjustment for three types of observations in the CPⅢcontrol network:horizontal angle,vertical right angle,and slant distance.Taking the right line CPⅢcontrol network survey project of the section between Ximen Station and Dongjiekou Station of Fuzhou Rail Transit Line 4 Project as an example,the rationality and reliability of the weighting method have been verified,and adjustment results with small point deviation,reliable accuracy,and the ability to resist gross errors can be obtained.

关 键 词：CPⅢ控制网 定权 抗差Helmert方差分量估计 平差 

分 类 号：P207[天文地球—测绘科学与技术]