摘要
针对生产项目中地物要素需要具备高程信息,并与立体模型贴合的要求,本文提出一种基于地貌数据为地物要素赋高程的方法。利用等高线和高程点数据,辅以水系数据,制作数字高程模型(Digital Elevation Model,DEM),并从DEM中提取高程值赋到地物要素节点中,使地物要素具有高程信息。结果表明,本方法实用性较强,可以满足生产项目中地物要素高程精度要求。
Aiming at the requirement that ground feature elements should have elevation information and fit with the 3D model in the production projects,this paper proposes a method to assign elevation to the ground feature elements based on geomorphological data.Using the contour and elevation point data,supplemented by water system data,we produce digital elevation model,extract elevation value from the DEM,and assign to the ground feature element nodes.The results show that this method has strong practicability and can meet the requirements of elevation accuracy of ground feature elements in production projects.
作者
王素元
乔俊平
李东辉
张光辉
孟帅
WANG Suyuan;QIAO Junping;LI Donghui;ZHANG Guanghui;MENG Shuai(The First Topographic Surveying and Mapping Brigade of MNR,Xi′an 710054,China)
出处
《测绘与空间地理信息》
2025年第8期200-201,204,共3页
Geomatics & Spatial Information Technology
关键词
地貌数据
地物要素
高程
数字高程模型
geomorphological data
feature elements
elevation
digital elevation model
