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Digital terrain model (DTM) are very much useful for many
applications, such as topographic mapping, watershed management, disaster
applications etc. To meet the immediate requirements of disaster applications,
Cartosat-1 data has been used to generate the DTM for the entire coast (~7600
line km, except Andaman and Nicobar islands) with minimum of 20 km inland
buffer from the coast covering approximately 1.5 lakhs sq. km. The DTM has been
provided to INCOIS, Hyderabad. This DTM has been evaluated with limited ground
surveyed MSL values and found that the height accuracy is about 6m, however the
relative accuracy is about 3m.
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