基于散乱点集的规则格网构建方法  

The Construction Method of the Regular Grid Based on Scattered Points Set

作　　者：陈春辉[1] 马苗苗 CHEN Chunhui;MA Miaomiao(Geophysical Survey Team of Henan Coal Geology Bureau,Zhengzhou Henan 450000,China;Henan College of Surveying and Mapping,Zhengzhou Henan 450000,China)

机构地区：[1]河南省煤田地质局物探测量队,河南郑州450000 [2]河南测绘职业学院,河南郑州450000

出　　处：《北京测绘》2018年第4期452-457,共6页Beijing Surveying and Mapping

摘　　要：数字高程模型(DEM)是地理信息系统(GIS)重要的空间地理信息,是地理信息系统(GIS)进行地形分析的核心数据。模型构建方法的选择是数字高程模型的核心问题,它直接影响数字高程模型的质量,贯穿于数字高程模型生产制作的全过程。数字高程模型有三种数据结构形式:规则格网数据结构、不规则三角网结构和等高线结构。在通常的使用中,规则格网形式的数字高程模型是使用最为广泛的一种,也是建立最为容易的。为此,本文着重对规则格网的构建方法中的内插方法进行了探讨。Digital Elevation Model(DEM)is the important spatial geography information in the geography information system(GIS),is the core data for the geography analysis of the geography information system.The construction method of the DEM model is the core problem of the DEM.And it affects the quality directly of the Digital Elevation Model,which runs through the whole process of the production of the digital elevation model.There are three digital elevation model data structure:the data structure of the regular grid,triangulated irregular network structure and contour structure.In normal use,the form of regular grid digital elevation model is the most widely used one,but also the easiest.Therefore,this article focuses on the interpolation method of the construction of the regular grid are discussed.

关 键 词：散乱点集 规则格网 数字高程模型 内插 精度评定 

分 类 号：P231[天文地球—摄影测量与遥感]