摘要
基于稳健抗差估计和方差分量估计理论,推导出结合胡贝尔法的Helmert三维自由设站间接平差模型。以地铁轨道某一断面数据作为应用对象,通过计算和分析,表明该平差模型不仅能够合理确定三类不同观测值的权值,而且可以抵抗已知点的坐标粗差对解算结果的影响,是一种切实可行的设站点解算方法,可为类似工程项目提供参考。
In order to solve the problems of determining the weights of different kinds of observations and the gross errors of known points,based on the theory of steady robust estimation and variance component estimation,we deduced Helmert’s 3 D free station indirect adjustment model combined with Hubert’s method.Taking a section data of metro tunnel as the application object,through calculation and analysis,we found that the adjustment model could not only determine the weights of three kinds of observation values reasonably,but also resist the influence of the known point coordinate gross error on the solution results.This method is an effective and practical method of station setting solution,which can provide reference for similar projects.
出处
《地理空间信息》
2021年第10期65-68,I0002,共5页
Geospatial Information
基金
浙江省自然资源厅2020年度科技项目(2020-19)。
关键词
三维自由设站
方差分量估计
稳健估计
地铁隧道竣工测量
3D free station
variance component estimation
robust estimation
completion survey of metro tunnel
