| dc.description.abstract | 3D laser scanning or terrestrial
lidar instruments have been in used in
surveying task since the 1990’s but it is very
new technology for the Sri Lankan surveying
field. Terrestrial laser scanners have been
proven to be a very versatile surveying
instrument with applications in many
sectors of use like, Detail topographic survey,
Road & Railway survey, Construction Site,
Volumetric Survey/ Mining Survey,
Monitoring Survey, Critical location survey,
Crime Scene, Accidents, Tunnel Survey, BIM
– Building Information Modelling & EMP –
Electrical Mechanical Plumbing and
Archaeological site survey.
The results of any surveying task must meet
specific conditions to provide the required
accuracy. Therefore, any surveying work
includes not only the relative positions of
points and objects but also an accuracy of the
results. It is imperative that a new
technology like terrestrial laser scanning
instrument before been use in the actual field
data collection to go under accuracy analysis
for Sri Lankan field conditions.
One of the fundamental theories is “Practical
is up on proven principal” in accordance with
this theory the accuracy of the terrestrial
laser scanner is going to be analysed against
the most commonly used surveying
instrument in the field the Total station.
The comparison will be done in normal Sri
Lankan field condition with weather, heat,
and pressure to get much better accuracy
comparison.
The experiments are designed in the
following way, two traverses from both the
Total Station and the Terrestrial Laser
Scanner are going to be run on the same set
of ground points then 3D error of each
measurement is going to analyse using
adjustment theory. The calculation will be
done using and computer algorithm. | en_US |
