数字地面模型

数字地面模型精度分析与取样间距的讨论

Discussion on Accuracy Analysis and Sampling Density of DTM

数字地面模型结合CAD在计算方量中的应用

The Application of DTM and CAD in Earthwork Calculation

数字地面模型在公路CAD中的应用

Application of Digital Terrain Model on CAD of Highway Alignment

GIS技术在建立数字地面模型和路线CAD中的应用研究

Application of GIS Technology in Digital Terrain Model Creation and Highway Route CAD

数字地面模型是铁路线路CAD的基础核心模块。

Digital Terrain Model is the basic and core module of the railway route CAD system .

基于机载LiDAR点云数据的复杂城市区域数字地面模型提取

Digital Terrain Model Extraction in Metropolis Based on LiDAR Point Cloud Data

除此之外，对下载数据进行坐标转换及混合表面建模处理，建立了基于GoogleEarth地形数据的数字地面模型。

In addition , treating the download data with coordinate conversion and mixed surface model , the digital terrain model based on Google Earth terrain data was established .

结果表明：采用Delaunay三角剖分构建三角网数字地面模型是行之有效的，具有较高的实用价值；

The result show : the DTM based on the delaunay triangulation is fast and valuable ;

数字地面模型（DTM）技术用于识别地图信息，在地理信息系统、地学、计算机图形学及虚拟现实等领域有着广泛的应用。

Digital Terrain Model ( DTM ) as a technology to identify map information .

该模型和结构既适用于二维图，也适用于数字地面模型（DTM）。

The data model and structure are suitable for not only 2D maps , but also DTM .

针对公路勘测设计一体化的特点与要求，论述应用GIS技术采集公路地面数据和建立数字地面模型的方法；

Aiming at the characteristic and request of highway survey and design integration , this paper discusses the methods of gathering highway ground data and set up digital ground the methods of models by GIS technology ;

数字地面模型为多种地形特征的定量分析与地形图的自动化绘制提供了基本数据，它是建立土建CAD和地理信息系统的基础。

The base data of the quantitative analysis about land feature and the automatic drawing of topographic map is furnished by Digital Terrain Model ( DTM ), it is the basics of Geography information System ( GIS ) .

顾及地形特征线的散点域（约束数据域）三角剖分是建立高精度数字地面模型的基础，在GIS、地学分析、计算几何、多分辨率DTM等领域中有着广泛的应用。

The triangulation of constrained data set is widely used in Geographic Information System ( GIS ), geo-science , computational geometry , multi-resolution and high precision DTM , et al .

星载SAR影像定位和从星载InSAR影像自动提取高程信息的研究利用干涉合成孔径雷达技术提取数字地面模型

Study on Location of Spaceborne Synthetic Aperture Radar Image and Extraction Digital Elevation Model from Spaceborne Interferometric Synthetic Aperture Radar Image DETECTING DIGITAL ELEVATION MODEL ( DEM ) BY INSAR TECHNIQUE

实验证明，该数字地面模型能够很好的与GoogleEarth平台上展示的影像图形相匹配，具有相对较高的精度。（3）建立了平面线形优化的数学模型。

Experiments show that the digital terrain model can be matched very well with the images displayed by Google Earth platform , and it has relatively high accuracy . ( 3 ) A mathematical model of horizontal alignment optimization was established .

对于采用本方法计算淹没区，准确性受地形图等高距大小、数字化采集精度、数字地面模型（DEM）高程精度以及格网间隔大小、像素探测分辨率等因素的影响。

The accuracy of flood area is mostly dependent on the contour interval of map , accuracy of digitizing map , accuracy of DEM , and interval of GRID , detecting resolution of pixels .

利用DTM最重要的是保证它的真实性，DTM精度是指数字地面模型与实际地形表面的逼近程度。

The most important thing making use of DTM is to guarantee validity ; the accuracy of DTM is degree of approximation of DTM ' surface and actual terrain surface .

数字地面模型的可视化是地理信息系统（GIS）、遥感（RS）和数字摄影测量（DP）的重要研究内容，它具有重要的经济和军事应用价值。

The Visualization of DTM ( Digital Terrain Model ) is the main research content of GIS ( Geographic Information System ) > RS ( Remote Sensing ) and DP ( Digital Photogrammetry ), it has very important value in economic and military .

数字地面模型是道路测量和设计现代化的重要基础，如果数字地面模型技术不能很好的应用在道路工程，那么道路CAD技术也难有很大的突破。

It is widely applied in GIS , terra study , it is an important foundation of the modern road survey and design . If the DTM technology is not well used in road works , then it is very difficult to have a breakthrough in CAD technology of road .

数字地面模型作为线路设计现代化的重要基础，如果不能很好地应用于实际工程，那么线路CAD技术也难以有新的突破，线路勘测设计技术也难以提高。

As an important basis of modernization of railway route design , if the digital terrain model can not be very well applied in practical engineering , CAD in railway route is difficultly broken through , and the technologies of route survey and design are also hard to be improved .

应用数字地面模型计算开挖工程量

Calculating the Excavated Volume by Means of Applying Digital Terrestrial Model

基于人工智能技术的数字地面模型空间插值研究

Research on the DTM spatial interpolation based on the AI technique

建立数字地面模型的算法研究

Research on the Algorithm of Construction of Digital Terrian Model

带状数字地面模型的数据结构及快速排序检索算法

The Data Structure , Sorting and Searching of DTM in Tape-shaped Terrain

数字地面模型三维地形数据制作的关键技术研究

Research on Key Technology with DTM Three Dimensional Terrain Data

利用干涉合成孔径雷达技术提取数字地面模型

Detecting digital elevation model ( dem ) by InSAR technique

基于三边域曲面的数字地面模型重建方法

The Model for Reconstructing Digital Ground with 3-side Region Surfaces

数字地面模型的简化是虚拟现实技术中的热点问题。

Simplification of digital surface model is popular issue of virtual-reality technique .

1/2000数字地面模型在高速公路勘测中的精度验证及应用

Validation and application of precision of 1 / 2000 DTM in freeway survey

基于数字地面模型的公路实时三维动画

Real-time 3D Road Animation Based on Digital Terrain Model