Method and Application of Ellipsoidal Expansion Method in Establishing Engineering Independent Coordinate
System Based on ccCS2000
范旭亮 FAN Xu-liang;湛国毅ZHAN Guo-yi;姚秀光YAO Xiu-guang
(贵州省第一测绘院,贵阳550025 )
( Guizhou Provincial First Institute of Surveying and Mapping,Guiyang 550025,China )
摘要:本文针对西南山区线状工程平面控制测量实践中，往往由于投影变形影响不能直接使用现行200O国家大地坐标系的现状,分析了影响投影变形的两个主要因素,并通过工程实例阐述了利用CNSS技术以及椭球膨胀法建立工程独立坐标系的方法，
Abstract: This article focuses on the current situation that the current 2000 national geodetic coortinale system cannot be directlyused due to the inluence of projection deformation in the horizontal control measurement practice of linear engineering in southwestemmountainous areas. Two main factors affecting projection deformation are analyzedl, and the method of using CNSS techmology and ellipsoidalexpansion method to establish an independent coordinate system for enginmeering is explained through engineering examples.
关键词:椭球膨胀法; CGCS2000;工程独立坐标系
Key words: ellipsoidal expansion method; CGCS2000; engineering independent coordinate system
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