High Resolution 1:10,000 scale Mapping Strategy of Multi ... - NDMA

The Task Force constituted Thematic Mapping suggested 10K mapping on first
priority. With the present status of Indian satellite, topographic mapping using
Cartosat – I can be done with the following specifications of cloud free data of the
country and high geometric fidelity for photogrammetric processing.
� 3 – 4m plainmetric (positional) accuracy
� 3 – 4m height accuracy
� Information content commensurate to 10 K topographic mapping
� Suggested to have 5m contour depiction on map (10m contour and \
5m interpolated with dotted symbology)
Further, thematic mapping on 10K can be done using Cartosat – I and LISS –
IV MX data with following specifications.
CONCLUSION
� Base, infrastructure, land use / land cover, soil ground water
prospects maps and slope maps with 5 m plainmetric accuracy.
� The theme content may be commensurate to 10K scale.
However, the statistics of the DEM difference of stereo Aerial photos and
Cartosat 1 stereo image indicate height variation in the ranges of 3m..
As compromise, the topographic mapping with above specifications can be
taken up as 10K series – I maps as and when Cartosat – III with 25cm spatial
resolution data(as per ISRO website ) is available these maps can be updated with
better specifications. This satellite is to be launched in 2012-13.
The higher resolution stereo data upto 40 CM resolution is commercially available,
where DEM/DTM/DSM can be derived with 1.5 meter contour intervals, which can
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