基于卫星遥感影像和DEM融合的地质断裂带研究  

The Study on Geological Fault Zone Base on the Merged Image between the Satellite Remote Sensing Image and DEM

作　　者：徐彦怀[1] 

机构地区：[1]国家测绘地理信息局陕西测绘产品质量监督检验站,陕西西安710054

出　　处：《测绘与空间地理信息》2016年第11期135-138,共4页Geomatics & Spatial Information Technology

摘　　要：应用遥感影像进行地表地质分析,具有数据量大、耗时短、费用低廉等优势,可以快速获取大范围区域的相关地质信息,因此,近年来,卫星遥感影像广泛应用于地质分析工作中。但是由于卫星影像在不同时期内的特征不同,且有大量不同的数据源,在不同影像上获取地质特征困难,因此,如何利用影像处技术增强影像中的地质特征,成为遥感影像地质判读的研究重点。地质断裂带调查一般借助各种直接与间接的调查方法以确认断裂带的存在与否和位置,了解断裂带的活动性,并提供点状或剖面数据材料。卫星影像在追踪研究贯穿地表且可为影像所解析的断裂带上,提供真实的影像证据,有助于直接分析影像中断裂带走向和延展。利用遥感影像处理计算,将卫星影像数据叠加到DEM上编制三维地形图,并利用计算机仿真,通过不同方向的投射光源,找出最适合的观察角及最能凸显出重点区域线状地类的状态。对于地质现象的分析及解释上,可提供较平面影像细致、准确的参考依据。The application of remote sensing image and surface geology analysis has the advantages of large data, short time, low cost and so on. It can quickly obtain the relevant geological information in a large area. So satellite remote sensing images are widely used in geological analysis in recent years. But the different data resource cause the characteristics of the satellite images are different in different periods, it＇ s difficult to obtain geological features on different images. So how to use image processing technology to strength- en the geological feature of the image becomes the focus of the study of remote sensing image geological interpretation. The investiga- tion of the geological fault zone is usually based on a variety of direct and indirect methods to confirm the existence and location of the fault zone, obtaining the activity of the fauh zone, and get the points or profile data. The research of satellite image is on the ground surface and can be the fault zone of the image, providing real image evidence, which is helpful for the analysis of the direction and ex- tension of the fault zone in the image. The use of remote sensing image processing, will be added to the DEM satellite image data compiled 3D terrain map, and the use of computer simulation, through the projection light in different directions, to find the most suitable observation angle and most can highlight the key areas of linear class state. The analysis and explanation for the geological phenomenon can provide reference plane image more precisely, the more accurate.

关 键 词：DEM 遥感影像 地质断裂带 

分 类 号：P237[天文地球—摄影测量与遥感]