Table 2 - Department of Land Resources
Table 2 - Department of Land Resources
Table 2 - Department of Land Resources
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Establishment <strong>of</strong> GPS Ground Control Network, Accuracy<br />
and Destination<br />
DGPS Control<br />
Interval –<br />
Distance K.M.<br />
GPS<br />
Observation<br />
Time<br />
Base Station Centre <strong>of</strong> AOI >24 Hrs & 12 < 24 Hrs 1: 50,000<br />
>12 Hrs. 1: 50,000<br />
4 - 6 K.M. > 4 Hrs. 1: 20,000<br />
Tertiary Control 1- 2 K.M. > 15 Minutes 1: 10,000<br />
Auxiliary<br />
Control Point<br />
200 Mtr. or<br />
more<br />
> 15 Minutes 1: 10,000<br />
Monuments & Control :<br />
DGPS<br />
Control<br />
Primary<br />
Control<br />
Secondary<br />
Control<br />
Tertiary<br />
Control<br />
Monumentation <strong>of</strong> Control Points<br />
Type and Size<br />
Rock Stone or<br />
Sand Stone<br />
30*30*75 CM<br />
Rock Stone or<br />
Sand Stone<br />
23*23*75 cm<br />
Rock Stone or<br />
Sand Stone<br />
23*23*75 cm<br />
Where to establish<br />
In protected areas like premises<br />
<strong>of</strong> permanent government<br />
<strong>of</strong>fices etc.<br />
As above + other protected<br />
structures, Village Tri-junction<br />
points, village Bi-junctions<br />
As above + Field tri-junction<br />
on bi-junction, Government<br />
lands etc., Field tri-junction on<br />
village boundaries or inside the<br />
village. Existing govt./ non-govt.<br />
buildings like GP <strong>of</strong>fice, school<br />
building, veterinary hospital,<br />
high tension lines etc.<br />
NIC,Deity,MCIT,GOI DOLR,MORD,GOI 62
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