摘要
本文探讨了采用三维激光扫描系统(LRIS-3D)系统采集小流域地形数据,结合GPS技术生成高分辨率DEM数据的新方法,建立了黄土高原丘陵沟壑区的高精度DEM。与常规方法建立的DEM相比,该方法建立的DEM分辨率最高可达1m,较好地表现了地貌的微观特征。建立DEM技术简单,时效性强,能为黄土高原典型丘陵沟壑区工程建设、地形地貌研究和水文分析提供现实性强、精度高的DEM。
This paper discusses a new method to acquire the terrain data of small watershed from a 3D laser scanner; and as an example, it develops a high-resolution DEM for Qiaogou basin in hilly and gully region of losses plateau, with the help of GPS technology. Compared with the DEM established in normal way, the precision of high-resolution model can be as high as one meter. Consequently, the simulation of the details of the terrain is greatly enhanced. A high resolution DEM can be built promptly with easytechnical effort, and provides real time and precise terrain data for the studies on terrains and landforms, for hydrological analysis and for the ecological program in the typical hilly and gully regions of the losses plateau.
出处
《电子测量技术》
2008年第2期167-169,176,共4页
Electronic Measurement Technology
关键词
LRIS-3D系统
高精度
DEM
LRIS-3D system
high resolution
digital elevation model
作者简介
田丰，男，1984年出生，河南正阳人，河南大学环境与规划学院在读硕士，主要研究方向为地理信息系统与水文、水土保持相关研究。Email：gis_tianfeng@yahoo．com．cn
秦奋，男，1966年出生，副教授，主要从事地理信息系统开发与应用方面的研究。
