基于GIS的河道可视化及断面提取方法研究

Research of River Course Visualization and Section Extraction Method based on GIS

地理信息系统(GIS)是地理学与计算机信息科学的有机结合,具有强大的可视化功能,在空间分析方面优势尤为显著。文章在对以往研究学习的基础上,对利用GIS和CAD软件进行河道三维可视化及断面提取的技术流程进行了系统的分析,并深入研究了流程的关键技术,同时,对流程在操作过程中可能遇到的问题及解决办法进行了讨论。以松花江依兰段河道地形测量数据为例,利用GIS和CAD软件建立了河道三维可视化数字模型,并提取河道断面信息,验证了技术流程的可行性。

Geographic information system is the organic combination of geography and computer information science, having a powerful visual function, particularly advantageous in spatial analysis. Based on the learning to previous studies, GIS and CAD software were used to analyze systematically the technical process and section extraction of three-dimensional visualization of river course, and the key technique of process was researched deeply, meanwhile, the problems that may be met possibly during the process of operation and solved method were discussed in the paper. Taking the topographic survey data of river course at Yilan river section along the Songhua River as the example, GIS and CAD software were used to set up the three-dimensional visualization digital model and extract the section information of river course, verifying.