Download
Download
Download
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Status of Horizontal Control in India - Past<br />
Old Geodetic Triangulation<br />
GT Triangulation was started on 10 th April, 1802 with an aim<br />
to<br />
design a Horizontal<br />
datum<br />
for<br />
India<br />
and<br />
adjacent<br />
countries<br />
Observation – Theodolite for angular and Invar wire for<br />
linear measurements<br />
Layout – Geometrical<br />
figure<br />
adjustment can be performed<br />
and<br />
network<br />
so<br />
that<br />
Result – Everest Ellipsoid as Indian Geodetic Datum,<br />
Horizontal<br />
coordinates<br />
for<br />
surveying<br />
and<br />
mapping<br />
activities<br />
In all 2873 GT stations in India situated on high hill tops.<br />
Present status – Switch over from Everest to WGS-84
Change language