独立坐标系模型对长度变形影响的研究  

Research on the Length Distortion of Independent Coordinate System Model

作　　者：李东[1] 毛之琳[1] 廖文兵[1] 陈敏[1] 

机构地区：[1]国家测绘地理信息局大地测量数据处理中心,陕西西安710054

出　　处：《测绘与空间地理信息》2014年第9期79-81,88,共4页Geomatics & Spatial Information Technology

基　　金：陕西测绘局科技创新项目(2010-2)资助

摘　　要：针对海拔较高的城市建立或改造独立坐标系,存在着如何选择模型及各模型对长度变形的影响等问题,通过算例对常见椭球变换和比例缩放模型进行较为全面系统的分析,归纳出常见模型在不同投影带区域、不同投影面高度对长度变形的影响差异,并得出有益的结论。To establish or convert the independent coordinate system for cities at high altitudes, there is an issue of model selection based on its impact on length deformation. In this article, numerical experiments are carried out to comprehensively analyze common ellipsoid transformation and proportional scaling models. The discrepancies of deformation impact of the common models in different projection planes and different projection surfaces of height are summarized, and instructive conclusions are drawn.

关 键 词：独立坐标系 CGCS2000 长度变形 

分 类 号：P22[天文地球—大地测量学与测量工程]