The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008 
DTM performed better (7.60m LE90) than the SRTM (10m 
LE90) on the whole study area. 
ACKONWLEDGEMENTS 
The author would like to thank Dr. Nandakumar (ISRO and 
Secretary of ISPRS WG IV/9) for the establishment and 
coordination of the ISPRS-ISRO Cartosat-1 Scientific 
Assessment Programme (C-SAP) and the ISRO-ISPRS C-SAP 
Evaluation Team for selecting our Institute as Investigator. 
Many thanks are also addressed to Dr. Simon Kay (EC-JRC), 
Principal-Investigator of the Mausanne les Alpilles test site, for 
providing GCPs and reference DTM. 
Finally, the author whish to thank NASA for providing the 
SRTM DTM through their website. 
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Table 5. Accuracy of the Cartosat-1 medium-resolution DTM.