Deriving Digital Elevation Model from SRTM Data

SRTM Elevation data is available in WGS co-ordinate system with latitudes andlongitudes. Converting SRTM data into Cartesian co-ordinates requires many operations inany raster GIS. However, if the area is large like a state of Telangana the data is not availablein single file. Telangana State data is available in two files viz., srtm_52_09 & srtm_53_09.Spatial references of these files are in latitude longitude projection with WGS 84. In this paperthe series of operations that are required to obtain the complete digital elevation model arepresented.