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矿区DEM建立方法及其精度分析

发表时间:2011-09-30  浏览量:1560  下载量:683
全部作者: 丁亚杰
作者单位: 中国矿业大学江苏省资源环境信息工程重点实验室
摘 要: 对矿区大比例尺地形图进行分析,首先提取出等高线与高程点等高程信息,利用ANUDEM法和不规则三角网(triangulated irregular network, TIN)插值法2种方法,基于高程点与等高线、高程点与离散化等高线分别建立数字高程模型(digital elevation model,DEM)。通过计算检查点的平均误差、单点最大误差和高差中误差,可知利用ANUDEM法基于高程点与离散化等高线建立的矿区DEM精度最高,可以用来监测与仿真模拟矿区地表沉陷变形。
关 键 词: 摄影测量与遥感技术;ANUDEM法;不规则三角网插值法;矿区数字高程模型;离散化等高线;精度
Title: Establishing method of DEM in mining area and its precision assessment
Author: DING Yajie
Organization: Jiangsu Key Laboratory of Resources and Environmental Information Engineering, China University of Mining and Technology
Abstract: For mining area, elevation data including contour and spot height could be extracted from the large scale map. Using ANUDEM and triangulated irregular network (TIN) interpolation, digital elevation model (DEM) could be established based on the contour and spot height, meanwhile based on the spot height and mass points from contour line. By caculating mean error, single maximum error and standard deviation of check points, the results showed that DEM established by method of ANUDEM based on spot height and mass points was more precise, and it could be applied to monitoring and simulating simulation surface subsidence deformation in mining area.
Key words: photogrammetry and remote sensing technology; ANUDEM method; triangulated irregular network interpolation method; mining area digital elevation model; discrete contour; presicion assessment
发表期数: 2011年9月第18期
引用格式: 丁亚杰. 矿区DEM建立方法及其精度分析[J]. 中国科技论文在线精品论文,2011,4(18):1687-1691.
 
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