摘要
高速铁路轨道控制测量采用精密控制测量技术,采用斜轴墨卡托投影可以避免高斯投影投影带可控范围小,坐标转换和分带计算的问题,对于东西走向的线路能很好地控制投影长度变形。文章以长吉高铁控制测量数据,实现斜轴墨卡托投影,经过其投影精度的探讨,确定斜轴墨卡托投影能满足高铁精密控制测量的精度要求。
The problems such as the controlled area by projection zone is small,the coordinate transforming and calculating by zones of Gauss Projection can be avoided if control survey of high speed railway tracks adopts precise control survey technology with Inclined Axis Mercator Projection.The projection length deformation can be controlled well of east-west trend lines.This article achieves Inclined Axis Mercator Projection with Changji High-speed Railway control survey data.After the discussion on accuracy of projection,it is assured that the accuracy requirements of high-speed precise control survey can be met by Inclined Axis Mercator Projection.
出处
《测绘与空间地理信息》
2011年第6期215-218,共4页
Geomatics & Spatial Information Technology
关键词
控制测量
长度变形
高斯投影
斜轴墨卡托投影
control measurement
length deformation
Gauss Projection
Oblique Axis Mercator Projection
作者简介
刘家臣（1959-），男，吉林九台人，高级工程师，主要从事工程测量、地籍测量、大地测量等工作。
