线性工程勘测定界控制测量坐标系的优选问题研究  

An Analysis of Coordinate System Optimization in Linear Engineering Reconnaissance Bordering Control Survey

作　　者：俞建康[1] 

机构地区：[1]浙江省统一征地事务办公室,浙江杭州310000

出　　处：《测绘与空间地理信息》2017年第4期184-186,共3页Geomatics & Spatial Information Technology

摘　　要：在铁路等线性工程控制测量中,由于线路跨度大、高差变化大,其所带来的长度形变也就大。本文分析了长度变形的原因,介绍如何确定高程投影面。结合衢宁铁路勘测定界控制测量,对选择不同的中央子午线、高程投影面进行了详细分析,通过长度变形数据对比,建立适合线性工程需要的坐标系。For linear engineering in engineering survey such as railway, longer span length and large changes of elevation will lead togreater length deformation. This article analyzes the reasons for the length deformation and how to determine elevation surface projec-tion plane. It provides detailed analysis on different choices of central meridian and elevation surface projection plane in Quning Rail-waybordering control survey, and builds appropriate coordinate system for linear engineering by comparing length de-formation data.

关 键 词：线性工程 长度变形 坐标系 抵偿投影面 高斯投影 

分 类 号：P232[天文地球—摄影测量与遥感]