摘要
地形图是构建数字高程模型(DEM)的重要数据源,同时近几年空间插值方法在建模精度等方面的应用得到了不断的提高,因此将等高线离散化成高程点进行空间插值构建高质量DEM成为值得研究的课题。在此背景下,本研究从操作的易行性及空间插值的原理出发,基于ArcGIS软件设计了6种离散化方法;并以江南某丘陵地区为实验区域,以大比例尺地形图为基础数据源,探讨了在不同影响因素下各离散化方法构建DEM时的差异性与适应性。
The topographic map is an important data source for building the digital elevation model(DEM).At the same time,the application of spatial interpolation method in modeling accuracy has been continuously improved in recent years.Therefore,it is worth studying to discretize contours into elevation points for spatial interpolation to build high-quality DEM.In this context,based on ArcGIS software,six discretization methods are designed based on the operation feasibility and the principle of spatial interpolation.Taking a hilly area in the south of the Yangtze River as the experimental area and a large-scale topographic map as the basic data source,the differences and adaptability of the discretization methods in the construction of DEM under different influencing factors are discussed.
作者
张凯莉
赵明伟
ZHANG Kaili;ZHAO Mingwei(College of Geographic Information and Tourism,Chuzhou University,Chuzhou 239000,China;State Key Laboratory of Resources and Environmental Information System,Beijing 100101,China)
出处
《测绘科学技术学报》
北大核心
2019年第4期424-429,435,共7页
Journal of Geomatics Science and Technology
基金
国家级大学生创新创业训练项目(201910377007)
国家自然科学基金项目(41701450
41571398)
安徽省自然科学基金项目(1808085QD103)
资源与环境信息系统国家重点实验室开放基金项目(2018年度)
