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Seamless homogeneous DEM is produced by TIN modeling of irregular DEM, interpolation for regular DEM generation and automatic strip to strip mosaicing. These automatically generated DEM tiles are further evaluated for quality and tile editing to remove anomalies. The detailed design and methodology can be referred [4&5.] The
Number of tiles for download has been fixed to 10 tiles/day for Cartosat -DEM , AWiFs data and 16 tiles/day for LISS-III data. Other tiles can be saved in backlog list for future reference. A list of related technical documents is also available for download.
Introduction. Cartosat - 1. Department of Space (DOS), Government of India has a glorious history of having launched a series of satellites for Earth’s resource management and monitoring. These satellites have been very successful in providing data in various scales ranging from 1:1Million upto 1:12,500 scale.
Spatio-temporal dynamics of surface melting over Antarctica is of importance in understanding the response of ice shelves to climate change. Normalised radar backscatter is sensitive to the water content of snow.
It is observed that, to large extent, sinks have been eliminated in CartoDEM version 2.0. However, few sinks were observed in some of sample datasets evaluated, especially in flat terrain. It is suggested to correct sinks in the DEM , useful for flood inundation analysis and other applications.
The edited DEM is used to generate ortho products and slope map. The paper portrays the methodology and efforts in generating ortho products and quality aspects of seamless state-wide data products at the country level. Index Terms - CartoSAT-1 stereo data, LISS-IV multi-spectral data, digital elevation model (DEM),
National Remote Sensing Centre
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Flattening of water bodies in CartoDEM, the Indian National DSM, is done by developing an automated software for quick processing. The inputs are 1o x 1o DEM tiles in GeoTIFF format, shape file containing water body polygons extracted from Cartosat‐1 ortho imagery in a semi‐automated manner.
