CARTOGRAPHY AND TERRAIN MAPPING USING IRS-1C DATA

IRS-1C satellite provides multispectral LISS-III and high resolution s teerable panchromatic data for cartographic applications. The updation of topographic maps mill be one of major applications of these data, This article gives a theoretical assessment of the cartographic potent ial of IRS-1C imagery and the early results from few stereo pairs, For moderately undulating terrain, stereo pairs with B/H of 0.5 and moder ate radiometric contrast, the elevation information derived from IRS-1 C imagery is sufficient for 1:25,000 scale mapping, Standard linear fe atures in topographic maps of 1 : 50,000 and 1 :25,000 scale maps coul d be reidentified and registered on the imagery, Identification of new features is possible for mapping at 1:25,000 and 1:50,000 scale.