This product is at the top of the line of current
technology, and involves drones and cameras of the highest range, accompanied
by base stations for coordinate control.
Why or when use LIDAR ?
Conventional topography requires a line of sight
between the Total Station (surveying equipment) and the prism that receives the
measurement, its performance is based on taking the greatest number of points
from a station, without the surveyor having to move again to have a new view of
points inaccessible from the previous station. That is fine and simple for land
cleared of vegetation, now imagine that this land is a farm with orange crops,
the surveyors will surely have to move every 50ft (10,000sq ft), this movement
takes 30min on one acre, that is, must move more than 4 times per acre. Each
transfer involves a relative error in the coordinates and this error is
cumulative, that is, it increases more and more each time. It also increases
the cost of the surveying service, you pay for the time. Remember, the problem
is the view, which is not available in cultivated land or forests.
Now imagine the case in which a Developer wants to
plan his project, but must wait 6 months or more for environmental permits to
be able to clear the vegetation (what areas will they allow me to clean?) and
then a couple of months clearing the land, time is money. , I want productivity
and working with conventional topography does not allow me to do so.
The RTK base station links to the drone's RTK
antennas and does not need visual, they can be miles away. The RTK base station
is located on or tethered to a point obtained from the Florida Department of
Agriculture and Consumer Services. That is to say, the transfer from the
station to the drone lasts just a thousandth of a second, the drone has an
exceptional view and flies over the terrain from almost infinite viewing angles
(which conventional topography cannot), then you have the performance you need,
with greater precision, since the error is not cumulative and is less than
1/2" (Depends on the flight height and the type of information required).
Topography work with Lidar technology does not
require a horizontal line of sight, nor does it require setting up fixed
equipment, at the speed of a Drone and a Lidar camera (up to 200,000 points per
second) you take data with real coordinates in real time, these data are not a
simple XYZ coordinate, these points make up a model and have color, that is,
the generated 3D surface behaves like a 3D Render, I can take measurements and
filter this information in many ways, such as elevation or color. All of this
allows me to obtain the ground levels of a forested area, making it feasible in
terms of cost and time since the laser penetrates empty spaces between trees,
which is impossible in terms of time and cost with conventional topography. A
post-process in the office allows you to filter the information and obtain
contours months before and without cutting a single tree.
You need a forest inventory, since lidar
information allows you to measure tree height, average crown spread, and surely
even identify species beforehand by sampling in the field.
If you need runoff lines, contours, CAD, slope maps
and other technical information, it can all be processed with LIDAR mapping.
In the end:
You have more information with a lower
cost
You have greater precision
You reduce planning time, since you do
not depend on the cleaning of the lot or environmental permits.
You have control over changes to your
land during cultivation or housing development
Your register machine made a ring, once again
LIDAR Vs Traditional Surveying
LiDAR scanning employs laser beams to collect data
rapidly, capturing thousands of data points per second. This speed is
particularly beneficial for large-scale projects requiring timely data
acquisition. Traditional surveying methods often involve manual measurements,
which can be slower and envolve human errors.
What is RTK ?
Real-time kinematic, also known as RTK, is a
surveying technology which measures the relative positions while using two
different Global Navigation Satellite System (GNSS) antennas in real-time with
better accuracy. The errors found in GNSS results are decided and fixed using
RTK technology.
What is LIDAR ?
LiDAR is an acronym for Light Detection and
Ranging. It's essentially a remote sensing method that uses rapid light pulses
to map out the surface of the earth. It uses the pulse from a laser to collect
measurements to create 3D models and maps of objects and environments.
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