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EXTERIOR ORIENTATION IMPROVED BY THE COPLANARITY EQUATION AND DEM GENERATION FOR CARTOSAT-1

In this paper the sensor model evaluation and DEM generation for CARTOSAT-1 pan stereo data is described. The model is tested on CARTOSAT-1 data provided under the ISPRS-ISRO Cartosat-1 Scientific Assessment Programme (C-SAP). The data has been evaluated using the along track model which is developed in UCL, and the Rational Polynomials Coefficient model (RPCs) model which is included in Erdas Photogrammetry Suite (EPS). A DEM is generated in EPS. However, the most important progress that is represented in this paper is the use of the Coplanarity Equation based on the UCL sensor model where the velocity and the rotation angles are not constant. The importance of coplanarity equation is analyzed in the sensor modelling procedure and in DEM generation process.