| dc.description.abstract | Any country in the world has its
own geodetic coordinate system and it is
very useful in all types of surveying activities.
Accuracy of the geodetic control network is
very important in every aspect. In Sri Lanka
(Early named as Ceylon), the systematic
triangulation process began in 1857 and
completed in 1885. This network was
recomputed with some additional
observation done in 1890 due to
inconsistencies occurring mainly in the
minor triangulation. But later found that, the
new introduced fixing values have serious
error. A new horizontal control network was
established in 1999 with using Global
Positioning System (GPS) and there were
included thirty two (32) old network points
to calculate the transformation parameters
between the old local datum (Kandawala
Datum) and the new horizontal network. But
new system and old system gives different
coordinates for same control points.
In this study, Kandawala network is
compared with new SLD_99 network to find
differences between these two networks.
Scaled out figure of the ten secondary control
points of SLD_99 were observed with GPS
observations and analyzed to perform a
network adjustment and for comparison. | en_US |
