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铁路轨道线形智能分段
引用本文:李姗姗,陈起金,旷俭,牛小骥.铁路轨道线形智能分段[J].科学技术与工程,2016,16(34).
作者姓名:李姗姗  陈起金  旷俭  牛小骥
作者单位:武汉大学卫星导航定位技术研究中心,武汉大学卫星导航定位技术研究中心,武汉大学卫星导航定位技术研究中心,武汉大学卫星导航定位技术研究中心
摘    要:轨道实测线形分段是不平顺检测计算的首要步骤。针对当前铁路线形分段主要依据正矢或曲率的现状,提出一种基于轨道姿态角的线形分段方法;即将GNSS/INS组合测量系统提供的轨道姿态角信息和轨道各元线形固有的几何特征结合起来进行分段。对比实测数据分段结果和轨道设计文件,平面和纵断面线形分界点里程识别误差均不大于6 m,证明该线形分段方法行之有效。

关 键 词:铁路轨道测量  GNSS/INS  线形判断  FMH滤波  整体最小二乘
收稿时间:2016/6/26 0:00:00
修稿时间:2016/8/19 0:00:00

Linear Segmentation of Railroad Track Lines
Li Shanshan,Chen Qijin,Kuang Jian and Niu Xiaoji.Linear Segmentation of Railroad Track Lines[J].Science Technology and Engineering,2016,16(34).
Authors:Li Shanshan  Chen Qijin  Kuang Jian and Niu Xiaoji
Institution:GNSS Research Center of Wuhan University,Wuhan,430079,GNSS Research Center of Wuhan University,Wuhan,430079,GNSS Research Center of Wuhan University,Wuhan,430079
Abstract:The measured linear segmentation is the first step of irregularity detection calculation. Considering the current method are mainly on the basis of versine or curvature, this paper propose a new method of linear segmentation according to the attitude measurement data, which combines the GNSS/INS measured attitude data with the inherent geometrical characteristics of the railroad to segment. Compared with the design parameters of the railroad track, the identification error of the demarcation point of the plane railway track and the longitudinal railway track are both no more than 6 meters in this paper. The experiment result shows that the method for segmentation is effective.
Keywords:track measurement  GNSS/INS  linear segmentation  FMH filter  total least squares
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