期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 4
出版社：Copernicus Publications
摘要：With the availability of CARTOSAT -1 data with stereo capability, it is possible to generate accurate Digital Elevation Model (DEM) for large area. Terrain parameters such as elevationt, slope, aspect, drainage, watershed boundaries etc., can be extracted from DEM. DEM is also a necessary input for Ortho-image generation which in turn provide a valuable input to topographic mapping and updation. Delineation of terrain features from space-borne remotely sensed data is dependent on accuracy of the Digital Elevation Model (DEM) used. Generating high-quality DEM from satellite stereo images requires precise Ground Control Points (GCP's). With the advent and use of Global Positioning System (GPS) it has become possible to provide high-quality GCP's. In the present study, an attempt has been made to use the CARTOSAT-1 stereo data for generating DEM over two different types of terrain. One stereo pair over hilly terrain of Dehradun in Uttaranchal and other stereo pair over plain area of Jaipur in Rajasthan have been processed to generate the DEM and it has been validated using Differential Global positioning system (DGPS) measurements
