福州市轨道交通6号线平面坐标系统投影变形分析  

Projection Distortion Analysis of the Plane Coordinate System of Fuzhou Rail Transit Line 6

作　　者：陈煌 CHEN Huang(Fuzhou Investigation and Surverying 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：《江西测绘》2024年第4期41-44,共4页JIANGXI CEHUI

摘　　要：为使城市轨道交通线路投影长度变形满足小于15mm/km的规范要求,论文根据投影变形原理,提出了抵偿高程面法、任意带高斯投影法和结合最小二乘法获取最佳抵偿高程面和任意带高斯投影法。在福州市轨道交通6号线的应用中,分别采用三种方法进行投影长度变形分析,最终得出的结论是采用最小二乘法拟合出的最佳抵偿投影面和中央子午线,可以使得测区内各点的长度综合变形值为最小。In order to make the projection length deformation of urban rail transit line meet the specification requirement of less than 15mm/km,this article expounds the principle of projection deformation,proposes the compensation elevation method,the arbitrary band Gaussian projection method,and the combination of least square method to obtain the optimal compensation elevation and arbitrary band Gaussian projection method.Taking the Rail Transit Line 6 project in Fuzhou as an example,three methods are used to analyze the projection length deformation,and it is concluded that using the least square method to fit the optimal compensation projection plane and central meridian can minimize the comprehensive length deformation of each point in the survey area.

关 键 词：城市轨道交通 抵偿投影面 高斯投影 最小二乘法 独立坐标系统 

分 类 号：U239.5[交通运输工程—道路与铁道工程] U212.24