Authors :
K.R. Hariharan; K. Shravan; Sree Lakshmi M; Vishnu M
Volume/Issue :
Volume 7 - 2022, Issue 12 - December
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3hB5Slm
DOI :
https://doi.org/10.5281/zenodo.7465975
Abstract :
3D mapping is profiling of objects in three
dimensions to map real objects. It is an important tool in
creating 3D scenes of a location that are useful for many
studies like high rise development, building interior and
exterior and effects of a disaster Among the several other
ways to obtain a 3D map, remote sensing satellite data or a
UAV can also be used to obtain the mapping data. Remote
sensing is a technology that allows measuring object's
properties from a distance, which is currently undergoing
tremendous advances in both precision and areas of
applicability. Large area 3D city models can be created
using stereo pairs of aerial photographs or high-resolution
satellite images and is less cost-effective technique for
many applications. UAV’S take aerial images over an area
incorporated with spatial data based on GNSS to produce
a high-resolution 3D image. The main objective of our
project is to prove a method of elevation mapping alternate
to DEM for a low- budget experiment or survey of a
smaller region. It also shows that mapping is, yet another
application of Navigation with Indian Constellation
(NavIC) developed by ISRO. We achieved this by using the
NavIC receivers available to us from the college NavIC
Lab. The antenna is firmly placed on a mobile platform,
along with the setup which includes a laptop to record the
data and to display the signal strength from the satellites;
a fair strength of signal from four satellites was the
minimum requirement for a reading of reasonable
accuracy. The setup is required to be moved along the area
to be studied, in a gridded manner. The area is gridded and
marked prior to the conduction of survey. This helps to
cover most of the irregularities and variations in the
topography. With this project we hope to demonstrate the
use of satellites to prepare highly accurate 3D Digital
Elevation Models which has numerous applications in
geological studies.
3D mapping is profiling of objects in three
dimensions to map real objects. It is an important tool in
creating 3D scenes of a location that are useful for many
studies like high rise development, building interior and
exterior and effects of a disaster Among the several other
ways to obtain a 3D map, remote sensing satellite data or a
UAV can also be used to obtain the mapping data. Remote
sensing is a technology that allows measuring object's
properties from a distance, which is currently undergoing
tremendous advances in both precision and areas of
applicability. Large area 3D city models can be created
using stereo pairs of aerial photographs or high-resolution
satellite images and is less cost-effective technique for
many applications. UAV’S take aerial images over an area
incorporated with spatial data based on GNSS to produce
a high-resolution 3D image. The main objective of our
project is to prove a method of elevation mapping alternate
to DEM for a low- budget experiment or survey of a
smaller region. It also shows that mapping is, yet another
application of Navigation with Indian Constellation
(NavIC) developed by ISRO. We achieved this by using the
NavIC receivers available to us from the college NavIC
Lab. The antenna is firmly placed on a mobile platform,
along with the setup which includes a laptop to record the
data and to display the signal strength from the satellites;
a fair strength of signal from four satellites was the
minimum requirement for a reading of reasonable
accuracy. The setup is required to be moved along the area
to be studied, in a gridded manner. The area is gridded and
marked prior to the conduction of survey. This helps to
cover most of the irregularities and variations in the
topography. With this project we hope to demonstrate the
use of satellites to prepare highly accurate 3D Digital
Elevation Models which has numerous applications in
geological studies.