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：CARTOSAT-1, launched in May 2005 is the latest of the India Remote Sensing series of Satellites built by the Indian Space Research Organisation. CARTOSAT-1, also known as IRS-P5 is basically a stereo mission. It has two panchromatic cameras onboard namely Aft and Fore, tilted by -5 0 and 26 0 with respect to nadir in along track direction so that stereo data is possible for every scene with a ground sampling distance of 2.5 meters. Data product generation from this stereo data involves usage of satellite epherimeris, attitude and proper geometric modelling. With the availability of high precision Ground Control Points, ground to image geometry is modelled and Digital Elevation Model (DEM) is generated, which is used for further generation of ortho rectified i.e. terrain relief corrected products. This paper provides an initial geometric accuracy assessment of the different levels of product namely standard geo-referenced, ortho-kit and ortho rectified products. Techniques for evaluating the DEM error are also discussed
