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Authors
Affiliations
1 Department of Geography, Shivaji University, Kolhapur, Maharashtra, IN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 1 (2016), Pagination: 116-121
Abstract
Digital elevation model is the finest tool for visual and mathematical analysis of topography, landscapes, land forms and modeling of surface processes. Indian Cartosat-1-satellite data was designed mainly for the purpose of cartographic applications & for terrain modeling. The global availability of Cartosat-1 satellite data provides baseline information for many types of worldwide research. However, the overall generation of the DEM of this product requires additional regional as well as global studies involving ground truth control and accuracy verification methods with a higher level of precision. For the present study, part of Panchganga basin of Kolhapur district, Maharashtra has been selected. The main objective of the present study is to generate and assess the accuracy of Cartosat-1 DEM using digital Photogrammetry and DGPS techniques. Initially, block triangulation has been generated with point positioning accuracy and it is being achieved with the Rational Polynomial Coefficients (RPCs) sensor model. Thirteen GCPs were collected by using advance DGPS techniques. Interior & exterior orientations have been performed through sensor model. Finally, DEM has been generated using LPS software. RMSE & Standardized RMS statistical techniques have been applied to assess the accuracy of Cartosat-1data. Accuracy assessment reveals that Cartosat-1 satellite data is having 6.13 m and 6.23 m RMS & Standardized RMS for generated DEM.
Keywords
Digital Photogrammetry, Cartosat-1, Orthorectification, DEM.
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