| 基于拉格朗日公式的水流路径算法研究 |
| |
| 引用本文： | 张占阳,郭新成,王金良,焦永清. 基于拉格朗日公式的水流路径算法研究[J]. 价值工程, 2011, 30(34): 151-152 |
| |
| 作者姓名： | 张占阳 郭新成 王金良 焦永清 |
| |
| 作者单位： | 长安大学地质工程与测绘学院,西安,710054 |
| |
| 基金项目： | 陕西省测绘局空间关系相似性项目(CHD2009JC073) |
| |
| 摘 要： | 提出了一种水流路径算法,该算法通过以各格网点为中心建立3×3窗口内基于6条拉格朗日曲线构成的局部曲面,再利用当前点在局部曲面中的等高线曲率选取合适的单流向算法以确定当前点的水流方向及其向下游点的流量分配比例。最后通过实例证明了该方法在水流累积量计算中的良好效果。
|
| 关 键 词： | DEM 单流向算法 拉格朗日公式 等高线曲率 |
Research on Flow Paths Algorithm Based on Lagrange Formula |
| |
| Zhang Zhanyang,Guo Xincheng,Wang Jinliang,Jiao Yongqing. Research on Flow Paths Algorithm Based on Lagrange Formula[J]. Value Engineering, 2011, 30(34): 151-152 |
| |
| Authors: | Zhang Zhanyang Guo Xincheng Wang Jinliang Jiao Yongqing |
| |
| Affiliation: | Zhang Zhanyang,Guo Xincheng,Wang Jinliang,Jiao Yongqing (College of Geological Engineering and Surveying and Mapping,Chang'an University,Xi'an 710054,China) |
| |
| Abstract: | In this paper,a flow path algorithm is proposed,a piece of partial surface based on 6 curves using Lagrange formula is established through every grid point in the 3×3 grid points area which have x,y and z values,and through the contour curvature of the current center grid point of the partial surface,the right single flow direction algorithm will be selected so as to calculate the flow direction of current point and its distribution ratio of water flow to its downstream point.Finally,good results using this method in the accumulation of the water are proved. |
| |
| Keywords: | DEM single flow direction algorithm Lagrange formula contour curvature |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
