摘要
根据国土资源部关于加快全国农村地籍调查工作的通知,全国农村地籍调查工作正在全面开展。在地籍测量环节,必须考虑测区中心离中央子午线的距离和测区高程的大小对长度变形的影响。当长度变形值大于2.5 cm/km时,可采用投影于抵偿高程面上的高斯正形投影3°带平面直角坐标系统。本文结合工程实际经验,给出了抵偿高程面的确定方法及抵偿高程面上的坐标计算方法。
According to the national rural cadastral survey of land and resources to accelerate the work notification,national rural cadastral investigation is carried out fully. Measure must be taken into account in the cadastral survey link,measured the distance from the central meridian and the district center area the size of the height of the influence of the length deformation,when the length deformation value is greater than 2.5 cm/km,can adopt gauss orthomorphic projection on the surface of the projection in level 3° plane rectangular coordinate system. Combined with practical engineering experience,this paper presents a determination method of compensating level surface,and coordinates calculation method on the surface of the counter height.
作者
林立华
LIN Lihua(Non-ferrous Geological Surveying and Mapping Institute of Guangdong Province, Guangzhou 510080, China)
出处
《测绘与空间地理信息》
2018年第4期215-217,共3页
Geomatics & Spatial Information Technology
关键词
抵偿高程面
长度变形
坐标计算
level surface
coordinate calculation of deformation
length
