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The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008
accuracy of 0.8 GSD. In relation to other optical space sensors
this is a very good result.
For the stereo scenes of Castelgandolfo the DSM was generated
using the orientation achieved with the RPC extracted by
SISAR. Cartosat-1 DSM was compared with a precise reference
from aerial images and the results achieved show the goodness
of the model. From DSM comparison in the open areas an SZ of
2.88m is achieved, while in the urban areas the SZ is around
4.67m. The latter value, in urban area, is due to the lower
resolution of satellite imagery with respect to the aerial images,
which causes a smoothing effect in the Cartosat-1 DSM.
The GSD of 2.5m also allows the generation of the main
structures of build up areas.
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