由于黄土高原地区地形复杂，在坡耕地遥感调查中单纯采用监督分类法很难获得理想的精度。
The classification accuracy is unsatisfactory in the complicated terrain area of the Loess Plateau when the single supervised classification is used in the remote sensing investigation of slope field.
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.
地形决定了地面电磁波反射的强弱，反射的强弱又决定了被动遥感影像的质量。
The quantity of the EM energy that reflected from the ground decided the quality of the satellite image of passive remote sensing.
图像融合技术在遥感、医学、自然资源勘探、海洋资源管理、地形地貌分析、生物学等领域占有极其重要的地位。
Image fusion technology occupies important places in the fields of remote sensing, medicine, natural resource exploration, Marine resource management, terrain landform analysis and biology.
在地形复杂地区，采用传统的遥感分类方法进行土地利用遥感分类很难获得理想的精度。
The land use classification accuracy is usually unsatisfactory in the complicated terrain area when the traditional methods are used.
合成孔径雷达（SAR）差分干涉测量是一种最新的大地形变测量遥感技术方法。
SAR differential interferometry is an up-to-date measurement technology for terrain deformation.
而对于高分辨率遥感图像的变化检测，面临的突出问题是对配准误差的敏感性和人工环境下地形的复杂性。
The most serious problems for change detection on high-resolution images are the sensitivity to registration and the complexity of terrain.
基于历史地图、地形图和遥感影像提取1932年以来，北京主城区城市空间扩张，以及建筑密度空间信息。
This study identifies the process of urban expansion and building density since 1932 using a combine of technology of RS and GIS.
本文以教育部春晖计划——“基于网格的喀斯特地区数字博物馆的基础研究”为背景，结合遥感数字影像处理，研究三维真实感地形的建模和可视化方法。
As we know the build of third dimension scene needs a lots of real remote sensing images, theirs combination is one efficient way to high third dimension.
这两种方法都能有效地进行隐面消除，并通过明暗处理获得了真实感较强的立体地形图和三维遥感图。
By using these two methods, hidden surfaces are removed effectively. After shading treatment 3-d terrain pictures reflecting the real situation and remote sensing images are obtained.
这两种方法都能有效地进行隐面消除，并通过明暗处理获得了真实感较强的立体地形图和三维遥感图。
By using these two methods, hidden surfaces are removed effectively. After shading treatment 3-d terrain pictures reflecting the real situation and remote sensing images are obtained.
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