摘要：Digital Surface Model (DSM) generation can be achieved through radar interferometry, utilizing the phase difference between the represen tations of the interferometric pairs. Interferometry is a widely used height information acquisition technique for large areas. Sentinel - 1 continues the C - band SAR Earth Observation heritage of the European Space Agency satellites like ERS - 1, ERS - 2 and ENV ISAT. This paper discusses DSM generation utilizing Sentinel - 1 radar data through interferometric process in two different study areas in Greece. DSMs generated from Sentinel - 1 data were analyzed and compared to freely available DSMs like ASTER GDEM and SR TM DEM, to DSMs created from optical remote sensing data and to DEMs created from digitized contours from the 1/50.000 topographic maps. The influence of the interferometric pairs baseline and the role of the different tracks to the DSM vertical accuracy was examined. Points of known elevation have been used to estimate the accuracy of the DSMs. 2D RMSE, correlation and the percentile value were computed and the results are presented
