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.
规则格网是数字地面模型最常用的表示方法，有着广泛的应用。
Regular Grid is the commonly used expression method of DTM , and has the widespread use.
本文给出了一种用数字地面模型进行铁路纵断面自动设计的方法。
This is an attempt to give a method of railway profile automation design by means of digital terrain model.
研究了一种用数字地面模型和公路设计数据实现实时三维动画的方法。
A method is presented to implement real-time 3d road animation coupled with road design data and digital terrain model (DTM).
所建立的数字地面模型具有对数据量不限，执行效率高，查询速度快，连续无缝等特点。
The method presented in this paper have some advantages such as limitless number of points, high efficiency of constructing TIN, fast inquiry and continuous sealless DTM ete.
应用激光雷达数据生产高精度的数字地面模型，可为滨岸环境的研究提供精细的微地貌数据。
High resolution digital terrain model derived up from LiDAR point clouds can provide more details of microrelief information for tidal wetland environment researches.
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.
本文着重介绍在遥感影象分类中应用数字地面模型（DTM）改正地物反射光谱中地形影响的方法和试验。
In this paper the methods and experiments for applying the digital terrain model(DTM) to improve the classification accuracy are introduced.
简要阐述了数字地面模型(dtm)的基本概念，并结合矿山地质勘查，提出实际情况应用，利用CASS成图系统建立模型。
This paper describes the basic concepts of digital terrain model (DTM), how to use DTM in practice in the mining geological exploration, and how to use CASS surveying and mapping system to build DTM.
该文针对数字地面模型(dtm)的拼接问题提出了基于拼接线对三角网进行裁减的算法，并对其基本原理及主要过程进行了详细介绍。
To counter the splice problem of digital terrain model (DTM) the paper puts forward the algorithm of cutting out of splice line to triangle network.
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.
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.
对于火星，他们已经建立了所有的永久性基地驻地的元素模型(有的是数字模型，有的是实体模型)——居住地、研究实验室、营养液栽培花园、甚至还有地面探测车。
And for Mars, they've built models (some digital, some physical) for all the elements of a permanent base-living quarters, research LABS, hydroponic gardens, even the ground-exploration vehicles.
计算是在数字计算机“320”上完成的，并在地面设备上做了模型实验。
Calculations were performed on a "320" digital computer, and model tests on a ground test facility.
本文分析了数字电视地面广播通信信道具有长脉冲响应的多径衰落的特点，从频域上表达了其多径衰落信道模型；
The characteristics of the digital television terrestrial broadcasting (DTTB) channels with long impulse responses are analyzed, and the frequency domain multipath channel model is given.
介绍了由数字煤矿地面资源规划和数字煤矿地下工程系统两部分组成的数字煤矿的模型及主要内容。
Digital mine is consisted of two parts: the ground resources regulation and the underground project system. The paper introduces the model and the main content of the two parts.
过滤是LIDAR数据预处理的重要步骤，过滤的目的是把LIDAR数据分成地面点和非地面点，它是获取高精度数字高程模型的关键。
The aim of the filtering of LIDAR data set is to divide the data set into ground points and non-ground points. The filtering of LIDAR data set is a crucial step to obtain the DEM with high precision.
过滤是LIDAR数据预处理的重要步骤，过滤的目的是把LIDAR数据分成地面点和非地面点，它是获取高精度数字高程模型的关键。
The aim of the filtering of LIDAR data set is to divide the data set into ground points and non-ground points. The filtering of LIDAR data set is a crucial step to obtain the DEM with high precision.
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