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

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APPENDIX- XX<br />

TECHNICAL BRASSTACKS OF SURVEY OF INDIA<br />

As has been discussed earlier, aim <strong>of</strong> the National Mission is for generating<br />

the National Topographical Database (NTDB) <strong>of</strong> the entire country on 1: <strong>10</strong>,<strong>000</strong><br />

<strong>scale</strong> within three years through an innovative Public-Private-Partnership (PPP)<br />

mode and the effort requires to be apportioned between the Survey <strong>of</strong> India and the<br />

Private Players. Each <strong>of</strong> these steps and the method <strong>of</strong> their execution are as given<br />

below.<br />

1. Procurement <strong>of</strong> suitable Satellite imagery:<br />

The following satellite imageries have been considered appropriate for the<br />

generation <strong>of</strong> 1:<strong>10</strong>,<strong>000</strong> DTDB.<br />

a) Cartosat stereo satellite imagery with 2.5 m resolution<br />

For forest area (6.24 lakh sq.km), too many details are not required. Hence,<br />

cartosat stereo imagery is considered adequate for these areas. Quickbird PAN<br />

sharpened (0.61m resolution) multi-spectral mono-satellite imagery may also be<br />

used.<br />

b) Worldview satellite imagery with 0.5 m resolution.<br />

For the rest <strong>of</strong> the country (26.64 lakh sq.km.) Stereo Satellite Images with<br />

approximately <strong>10</strong>0% overlap over the AOI are to be used with<br />

- stereo metadata file (.STE)<br />

- collection angles (Convergence Angle, BIE and Asymmetry)<br />

- Tasking Order<br />

201

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