摘要
网格DEM建模时应考虑地形断裂线等特殊地形。基于杨赤中插值法,提出了判断及处理地形断裂线之上和两侧的网格点、离散点位置关系的算法以及断裂地形三维显示的方法,通过实例验证了该方案的正确性和可行性。
The ruptured line of terrain must be considered for structuring gridding DEM .Based on Yangchizhong′s method, the arith-metic of judging and dealing with grid point and known point which lie over ruptured line of terrain and it ′s side is brought forward , and the method of the three-dimensional present of ruptured terrain is brought forward .The correctness and feasibility of the method is validated by example .
出处
《测绘与空间地理信息》
2014年第11期80-81,84,共3页
Geomatics & Spatial Information Technology
基金
国家自然科学基金(41161072)
广西自然科学基金(2011GXNSFA018001)
广西空间信息与测绘重点实验室资助课题(1207115-08)资助
关键词
DEM
插值
断裂线
矢量叉积
三维显示
DEM
interpolation
ruptured line
fork product of vector
three - dimensional present
