基于DEM的数字地形分析主要是以对地形因子的分析为基础。
The analysis of terrain factors is the foundation of the digital terrain analysis based on DEM.
鉴于数字地形分析的实用性，本文最后对它的可视化进行了讨论。
At last, we discuss terrain visualization due to the practicability of digital terrain analysis.
数字地形分析的内容主要包括基本地形因子的计算和地形特征的提取。
We mainly analyse digital terrain, which includes the computation of basic terrain factor and the abstraction of terrain characteristics.
研究基于DEM的数字地形分析可以为各个领域提供地形分析的基础理论及实现手段。
The terrain analytic's basic theory for many fields and implement measure can be provided by digital terrain analysis based on DEM.
本文在介绍数字地形分析基本概念的基础上，从基本地形因子和复杂地形因子两个方面进行了研究与实现。
In this dissertation, the two sides of basic terrain factor and complex terrain factor are investigated and implemented based on the basic concept of digital terrain analysis introduced.
数字地形模型(DEM)包含着丰富的地形、地貌及相关的地学信息与知识，是GIS数字地形分析的数据基础。
As the data base of the GIS digital terrain analysis, digital Elevation Model (DEM) contains rich of terrain, topography and related geo-information and knowledge.
通过分析比较，得出DEM水平分辨率对提取的地形特征及水文特征的影响，为马莲河流域的数字地形分析提供了理论依据。
The effect of DEM horizontal accuracy toward character of terrain and hydrological have been concluded based on analyzing and comparing.
在此基础上进一步结合实验模型，这个数字模型被用于分析正弦地形上的近岸流在波浪作用下的分布情况。
Combined with the lab experiment, the numerical model is applied to wave-induced nearshore currents on a fixed tri-cuspate beach.
DEM是地形表面的数字表达，易于三维可视化和统计分析。
DEM is a digital expression of landform surface, and is of great advantage to three-dimensional visualization and statistical analysis.
在数字地形的基础上可开发各种河道信息应用系统，如冲淤分析、河床演变、工程规划、灾情评估等。
Based digital Terran information, river information application systems would be developed, such as erosion-deposition analysis, fluvial process, engineering planning and evaluation etc.
高精度数字高程模型(DEM)是水土流失规律研究与流域地形空间分析中重要的空间数据。
High accuracy DEMs is an important data in study of soil erosion and terrain feature space analysis.
在小区规划，园林设计等与三维地形有关的数字分析中，地表面积是经常用到的数据。
When community programming planed, surface area is usually used to express digital analyze about three dimension terrain.
基于地球同步卫星定位原理，分析了当利用数字化地形图提供测站高程时测站的多解和无解现象。
According to the Earth synchronous satellite positioning principle, multi-results and non-results are analyzed when the station height is given using DEM.
在三维地形有关的数字分析中，地表面积是经常用到的数据。
Digital Elevation model (DEM) is a common model of three dimension terrain, and digital analysis is mainly based on DEM.
另外，建立了数字高程模型、数字克山病分布模型、数字硒模型并作剖面图分析，定量分析了地形与微量元素分布的宏观变化规律。
Otherwise, based on DEM, digital model of KSD distribution, digital Se model and profile-map analysis, the research has a quantitative analysis of macro change rule in microelement distribution.
基于规则数字高程模型格网的峡谷检测是地形特征分析的重要手段。
Valley extraction based on a regular DEM grid is an important method for terrain analyzing.
从数字化地形中自动提取地形特征是地形分析的一种重要方法。
The extraction of terrain features is very important in terrain analysis.
数字高程模型(DEM)是一种常用的三维地形建模数据模型，三维地形的数字分析主要是针对dem模型的。
Digital Elevation ModeI (DEM) is a common model of three dimension terrain, and digital analysis is mainly based on DEM.
从扫描数字化的基本原理及实施过程出发，分析了基于大比例尺地形图的扫描数字化的误差来源，着重讨论了影响扫描数字化数据结果精度的主要原因及采取的措施。
By analysing error resulting from the process of terrain map by digital scanning, we studied the precision problem in this process and made this process much more reliable.
数字高程模型已经广泛应用于地形分析和相关研究领域。
DEM has been widely used in the analysis and related research region.
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.
在GIS支持下，利用土壤背景和数字地形模型可实现水土流失潜在可能性分析。
The soil erosion potential possibility can be studied using the soil background map and digital terrain map supported by GIS;
在GIS支持下，利用土壤背景和数字地形模型可实现水土流失潜在可能性分析。
The soil erosion potential possibility can be studied using the soil background map and digital terrain map supported by GIS;
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