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

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o Analysis and Products<br />

o Quality assurance and project handover<br />

PROJECTION SYSTEM<br />

The Universal Transverse Mercator (UTM) coordinate system must be used.<br />

The datum must be WGS 84. Such datum is compatible to GPS, remote sensing<br />

data and the Open Map Series now under preparation by Survey <strong>of</strong> India.<br />

POSITIONAL ACCURACY<br />

The regional level database must have a minimum accuracy <strong>of</strong> 5 m. The<br />

district level database should have sub-meter accuracy and micro level database<br />

should have accuracy up to millimeters.<br />

TECHNOLOGY<br />

1. Survey: Survey must be conducted using highly calibrated DGPS, electronic<br />

total station etc.<br />

2. Image Processing: Image processing involves image engineering, image<br />

classification, and image interpretation. ERDAS Imagine is widely used<br />

s<strong>of</strong>tware.<br />

3. GIS Technologies: ESRI, AutoDesk, Bentley, MapInfo etc are the<br />

technologies that can be used for GIS mapping and analyses<br />

25

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