绵阳城市坐标系统投影带和投影面的选择  

The Selection of Projection Plane and Projection Zone for Mianyang Urban Coordinates System

作　　者：陈勇[1] 蒋勇[1] 张鑫 

机构地区：[1]四川省第三测绘工程院,四川成都610500 [2]绵阳市测绘工程院,四川绵阳621000

出　　处：《测绘与空间地理信息》2014年第12期181-183,共3页Geomatics & Spatial Information Technology

摘　　要：由于绵阳各个县城间高差变化较大,为了选择绵阳城市坐标系统投影带和投影面的较为合适的选择,根据投影边长变形计算公式,进行了三种方法的投影计算。计算结果表明,绵阳城市坐标系采用中央子午线为105°,投影面为400 m的投影方案是较为合适的。Because of great ahitude difference between each county in Mianyang, in order to make a more appropriate selection of pro- jection plane and projection zone for Mianyang urban coordinate system, according to projection length distortion computing formula, this paper has done projection computation with three methods. The results show that the 105° central meridian and projection plane at 400 meters height is more appropriate for Mianyang urban coordinate system.

关 键 词：绵阳城市坐标系统 投影面 投影带 投影变形 

分 类 号：P226.3[天文地球—大地测量学与测量工程]