地面高程

基于DEM聚焦分析的旬平均气温与地面高程的相关性定量研究

Research on Quantitative Relativity between Average 10-Day Air Temperature and Ground Elevation Based on Focal Analysis of DEM

DEM不仅表达了地面高程的空间分布，而且据此可以自动生成流域的水系和分水线、自动提取地形坡度和其它地貌参数。

Not only because DEM express spatial distribution of ground elevation , but also because drainage networks and watershed boundary are generated and topographical gradient and other hypsographic parameters are extracted automatically from DEM .

在SAR图像几何校正过程中，数字地面高程模型的分辨率起着非常关键的作用。

In the process of SAR image geometric rectification , the accuracy of digital elevation model is very important .

干涉仪合成孔径雷达（InSAR）可以对地面高程进行有效测量，产生高精度的地面数字高度模型，具有广阔的应用前景。

InSAR is designed to measure high precision digital elevation models ( DEMs ) of terrain which has many applications .

针对实时雷达景像以及参考基准图像的成像方式，分析了地面高程起伏对实时雷达景像以及参考基准图像构像的影响，及合成孔径雷达（SAR）影像上因地形起伏产生的影像变形的改正；

This article analyzed imaging styles of the real radar 's and the reference images . Based on the analysis , the effect of height variation on real-radar imaging and reference images is discussed concretely .

将DEM与表达土壤、植被、地质、水文地质特性的参数的空间分布叠加在一起，还可以描述这些下垫面参数与地面高程之间的关系。

If DEM is combined with the spatial distribution of the parameters reflecting characteristic of soil , vegetation , geology , and hydrograph , the relation of the underlying surface parameters and ground elevation can be described .

相对于其它地面高程测量方式和其它InSAR系统，星载分布式InSAR系统具有自己独特的优点，因此正成为国内外关注的热点。

Because distributed spaceborne InSAR system has its own unique virtue relative to other ground elevation mapping technique and other InSAR system , it is becoming a hot point researched around the world .

利用机载激光雷达测量系统可以直接、高效、全天候的获取高精度地面高程信息，所以机载激光雷达测量正成为一种最有效和最可靠的获取数字高程模型（DEM）的方法。

Airborne LiDAR is becoming one of the most effective and reliable means for the digital elevation model ( DEM ) generation , because it can get the terrain elevation information directly , effectively and all-daytime with more precision .

与流域产汇流有关的地理数据主要有地面高程和反映土壤、植被、地质、水文地质特性等方面的参数等，其中以反映流域地形特征的数字高程模型（DEM）最为有用。

The geographic data relate to generating and collecting runoff are mainly ground elevation and the parameters reflecting characteristic of soil , vegetation , geology , and hydrograph , especially digital elevation model ( DEM ) is the most useful .

以ENVI软件为基础，通过分析带有地面高程信息遥感图像的校准、噪音清除、波段比值分析、消除地物光谱特性变动等处理方法，探讨了带有地面高程信息的遥感影像计算机分类方法。

Based on ENVI software , the computer classified method of remote sensing image with ground elevation information is studied by analyzing the processing methods of calibration , noise elimination , band ratio analysis , characteristic change cancellation of feature spectrum etc.

铁路线路三角网数模及地面高程内插系统研究

Study of Triangulated Irregular Network and Interpolating Terrain Elevation In Railway Location

带有地面高程信息的遥感影像计算机分类方法与实现

Classified method and realization of remote sensing image calculation with ground elevation information

从卫星雷达提取地面高程信息的原理与应用

Principle and applications of extracting DEM from SAR

由于地下空间处于地面高程以下，很容易受到暴雨、洪水的侵袭。

But the underground space is vulnerable to storms and floods because it often below a ground elevation .

该系统可用于地面高程数据库入库前的检查验收。

The system is applying to check and accept the elevation database before putting them into the database .

冰冻期地面高程等于原地面暖土高程与冻胀量之和。分析了冻土与暖土高程混用对工程建设的不良结果。

Some bad results for engineering project have been analyzed due to the mixed usage of altitudes in freezing and warm period .

平地效应使干涉纹图中的主要频率不在零频，不能反映实际地面高程的变化。

The flat-earth makes the main frequency of the interferogram not at the zero frequency , and can 't reflect the change of the topographic altitude .

由于主动微波观测受地面高程、地形和夏季冰雪融化等因素的影响比较大，主动微波遥感在大面积估算冰雪厚度还有一定困难，有待将来作进一步的深入研究。

Using the ASAR data to estimate snow depth still has a certain difficulty in a large-scale , therefore , a thorough study is necessary in the future .

基于摄影测量与多视几何理论的影像匹配技术可以获得地面高程信息、纹理数据等，它已逐渐成为三维数据获取的最主要手段之一。

Image matching based on Photogrammetry and multiple view geometry has become one of the main means of 3D data acquisition which can obtain ground elevation and texture data .

在此基础上叙述本文的城市洪水模型的改进过程：扩散系数用地面高程函数代替，综合降雨函数、渗透函数和排水函数形成函数项。

And it clarify the process of rectified model : replace terrain function to diffusion parameter , integrate rainfall function , drain function and seepage function to function item .

在地球重力场和地面高程随时间变化的情况下，地面真实垂直位移为水准高和大地水准面高变化之和。

In consideration of variations of gravity field and of ground height with time , real vertical displacement on ground is equal to the sum of variation of levelling height and of variation of geoidal height .

我国1∶100万比例尺数字高程模型，是在我国1∶5万及1∶10万基本比例尺地形图上，高精度读取方里网交点高程所构建的1公里栅格分辨率地面高程数字矩阵。

China new produced 1 : 1,000,000 DEM is a digital elevation matrix with one thousand meters resolution . Its main special characteristic is that it is built by extracting elevations at the kilometer grid intersections of the 1 : 50,000 and 1 : 100,000 topographical maps .

在分析了实时雷达图像成像方式的基础上，具体分析了地面高程起伏对雷达图像构像的影响，并进一步推导出在实时雷达图像上，图像像点位移与地面高程起伏的具体关系；

This article analyzed the real radar 's imaging styles . Based on the analysis , the paper discussed the effect of height variation on real radar imaging concretely , and deduced the quantitative relationship between the displacement of image points and height variation in radar imaging .

在对土壤侵蚀影响因素进行调查研究的基础上，建立起综合土地利用类型、土壤类型、地面高程和坡度、至村庄的最小距离等因素的地理信息系统土壤侵蚀研究模型。

On the basis of investigation into soil erosion factors , a model which depended upon synthesizing land use types , soil types , elevation , slope and the minimum distance to villages by means of geographical information system ( GIS ) was set up for soil erosion prediction .

利用地面数字高程模型数据确定地形构造线方法的研究

Study on the Methods of Extracting Terrain Structure Lines from DEM Data

地面数字高程模型的应用开发

Exploratory Development of Degital Height Model

对于航摄像对，可以直接通过像对解算像点的地面点高程，进而制作影像重叠区的正射影像。

For aerial photograph pair , the Orthophotomap of the image - overlapped region can be made by calculating directly spot height at image point .

由此看出，在某些应用中，忽略实际的地形起伏，给地面点高程一个均值，校正后的精度是不符合精度要求的。

This show that , assign a mean elevation to the ground points , but ignore the ups and downs of the terrain , the correction accuracy is not meet the requirements .

基岩标是地面变形监测、高程控制测量的重要基准设施。

Bedrock bench mark is an important surveying datum mark of land subsidence monitoring and height control .