摘要
由于投影面选择问题,矿区公路平面控制网建立中存在投影变形现象。规范规定,公路测区内投影长度变形值不得大于2.5 cm/km。分析提出,通过修改全站仪格网因子抵消高程改化从而减小投影长度变形值的方法,具有一定的实际意义。
Because of the projection plane choice problem,there are some problems in mine area plane control network establishment of projection deformation phenomena,inluding rules,regulations and road test area. The length deformation value shall not be more than 2. 5 cm/km. In the analysis of proposed by modifying the total station grid factor,it will offset the altitude change method to reduce the projection length deformation value,which has a certain practical significance.
出处
《中国锰业》
2017年第2期184-186,共3页
China Manganese Industry
关键词
平面控制测量
高程改化
投影变形
格网因子
Plane control survey
Elevation correction
Projection deformation
Grid factor
