欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
在利用ArcGIS等地形分析软件对DEM数据进行径流网络的自动提取时，由于水流方向算法的局限，在地势较平缓区域往往会出现平行河现象，造成平缓地区水系的误差。本文提出一种通过对原始DEM栅格数据进行河网特征嵌入与高程修正来实现对水系误差快速修正的方法。
英文摘要：
Stream network based on DEMs can be easily extracted by Terrain Analysis Software like ArcGIS. However, because of the limitation of general flow direction algorithm, there often occur some parallel rivers in flat areas, especiallyplains, which leads to errors in stream links. To solve this problem, this paper introduces a method to amend the errors of stream links making use of DLG data and elevation adjustment based on original DEMs. The result shows it greatly improve the spatial relation accuracy of steam networks derived from DEM dataset.
同期刊论文项目
同项目期刊论文
位置：