摘要
将 3 S技术有机结合 ,采用多类型、多波段、多时相 TM,SPOT,ERS-SAR和RADARSAT等图像数据融合及其正射影像制图技术 ,提取了长江三峡地区大量地质和构造变形的有关信息 ,取得如下成果 :( 1 )正射遥感影像地图是遥感图像经过几何精纠正 (包括投影差改正 )并与简化了的数字地形图要素复合而成的一种新图。研究中在对 TM45 3 ,SPOT和ERS SAR卫星影像进行多图像融合的基础上 ,利用作者新开发的正射遥感影像地图制作系统软件 ( RS_ Ortho Mapper)制作完成三峡库区开县幅 1∶ 2 5万和云阳县 1∶ 5万正射遥感影像地图 ;后者是 TM45 3与 SPOT全色波段融合图像的正射遥感影像地图 ,地面分辨率 1 0 m,其投影差改正用的 DEM由 SPOT图像立体相对计算获得。 ( 2 )研究中利用开县幅 1∶ 2 5万正射遥感影像地图 ,应用作者提出的“遥感信息场分层解析新方法”及其理论 ,分四个层次对测区线性构造 (断层和遥感大节理 )进行了详细解译和定量解析 ,建立了四期构造变形场并反演得出相应的构造应力场。( 3 )干涉雷达遥感技术是当今国际上遥感界和三维摄影测量领域的前缘研究课题。研究中利用 ERS-SAR图像进行了干涉处理试验研究 ,获得三峡库区 DEM一幅。( 4 )利用 RS,GPS和 GIS集成技术 ,建立了长江三峡地区及重点滑坡体的三?
In this paper, under the RS, GIS and GPS technology, data fusion and orthophotomaps of multi temporal Landsat TM, SPOT, ERS SAR and RADARSAT images are made. Furthermore a lot of information on geology and structural deformation is extracted. An orthophotomap is a new type of map accurately corrected for geometry and a composite one with a simplified topographic map. In this study, the authors conduct the data fusion of Landsat TM, SPOT and ERS SAR images. Then, utilizing RS _OrthoMapper v1.0 software explored by themselves, they make three kinds of orthophotomaps, that is 1∶250 000 map of Kaixian, 1∶100 000 map of Baishahe and 1∶50 000 map of Yunyang respectively. The last one is an orthophotomap of fusion image of TM453 and SPOT panchromatic band with 10 m ground resolution, and DEM used in the rectification comes from SPOT stereopairs. Applying the 1∶250 000 orthophotomap of Kaixian and the theory and method of phase separation analysis of remote sensing information field, geological and structural features are systematically interpreted and the linear and circular structures are quantitatively analyzed. With a synthesizing analysis of the combined folds, faults and related major joint systems, four periods of structural deformation and the resulted deformation fields are determined. As a result, four tectonic stress fields produced successively during the Yanshanian to Himalayan period are recovered. Through the ARSIS fusion of the Landsat TM 4,5,3 images and SPOT P images, lots of best image results with a high spatial resolution of 10 m and affluent colors are obtained. Many 3 D viewing maps of remote sensing images of the landform relief with a high resolution and projected from different directions are established. With these maps, quantitative analysis as drawing a section of landform and detecting DEM of some objects can be done directly and rapidly.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第4期378-385,共8页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
教育部"骨干教师培养基金"资助项目
"四川省学术和技术带头人培养基金"资助项目 (批准号 :2 2 0 0 1 0 8)
关键词
正射遥感影像制图
ARSIS数据融合
遥感信息场分层解析
灾害地质
INSAR
长江三峡库区
orthophotomap
ARSIS data fusion
method of phase separation analysis of remote sensing information field
geological hazards
InSAR
Yangtze Three Gorges Project Region
