摘要
针对高速铁路轨道基准点测量工作中的自由设站问题,提出了一种利用方差分量估计理论高精度解算空间自由设站三维坐标的方法;推导了基于Helmert的全站仪自由设站三维间接平差模型以及线性化误差方程的严密公式,将其应用于高速铁路轨道基准点的测定,并详细介绍了工作流程。通过计算与分析发现,基于Helmert的自由设站三维间接平差模型是正确的,将其应用于高速铁路轨道基准点的测定工作是可行的。
Aiming at the problem of free station in the GRP measurement of high speed railway, we used the variance component estimation theory to calculate the 3 D coordinates of free space station with high accuracy. And then, we derived 3 D indirect adjustment model of total station instrument for free station based on Helmert and strict formula of linearized error equation, applied them into the GRP determination of high speed railway, and described its working flow in detail. Through calculation and analysis, we find that the 3 D indirect adjustment model for free station based on Helmert is correct. It is feasible to apply it into the GRP determination of high speed railway.
作者
陈德理
马进全
CHEN Deli;MA Jinquan
出处
《地理空间信息》
2020年第1期101-103,10,共3页
Geospatial Information
基金
精密工程与工业测量国家测绘地理信息局重点实验室开放基金资助项目(PF2012-3)
