The Use of Drones (UAV’S) in seismic survey. LIDAR Lidar technology has been used for years in seismic survey. In the past it has been an expensive addition to the cost of the front end, Cameras were large and bulky and needed to be mounted on a helicopter or fixed wing. Lidar would only pay for itself on the bigger 3d’s and was very often the clients decision to pay the additional cost. Today lidar has come a long way, cameras are smaller, lighter and faster, the software is user friendly and does not require the processing time that Lidar took even 5 years ago. With the development of commercial drones and their increased payload capacity it has made UAV mounted Lidar a very economic option for use in Seismic Survey. Lidar image with contour map. How lidar works in a seismic application. A lidar camera is basically a laser camera, it will send millions of rapid beams out and reflect off any object in its path , the rate of shots per square meter can be changed. A rate of 3000 / m2 would be a high precision survey. For seismic the desired product would be the final ground Elevation. This is done with software that filters the highs of the reflected treetops (canopy) with the lows of the ground elevation. Once the processing is done a detailed map and values are generated, X-Y-Z (position and Elevation) or DEM ( Digital Elevation Model). However this does not give us the elevation at our known points (stations and Shots). For this we still need to stake out and generate a position (X-Y) on these points. In the past clients have agreed to many different ways of generating a quality position. Garmins with a DGPS antenna would be at the minimum requirements and a standard L1-L2 Receiver with GNASS and DGPS link would be preferred.
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The Use of Drones (UAV’S) in seismic survey.
LIDAR
Lidar technology has been used for years in seismic survey. In the past it has been an expensive
addition to the cost of the front end, Cameras were large and bulky and needed to be mounted on a
helicopter or fixed wing. Lidar would only pay for itself on the bigger 3d’s and was very often the
clients decision to pay the additional cost.
Today lidar has come a long way, cameras are smaller, lighter and faster, the software is user friendly
and does not require the processing time that Lidar took even 5 years ago. With the development of
commercial drones and their increased payload capacity it has made UAV mounted Lidar a very
economic option for use in Seismic Survey.
Lidar image with contour map.
How lidar works in a seismic application.
A lidar camera is basically a laser camera, it will send millions of rapid beams out and reflect off any
object in its path , the rate of shots per square meter can be changed. A rate of 3000 / m2 would be a
high precision survey.
For seismic the desired product would be the final ground Elevation. This is done with software that
filters the highs of the reflected treetops (canopy) with the lows of the ground elevation.
Once the processing is done a detailed map and values are generated, X-Y-Z (position and Elevation)
or DEM ( Digital Elevation Model). However this does not give us the elevation at our known points
(stations and Shots). For this we still need to stake out and generate a position (X-Y) on these points.
In the past clients have agreed to many different ways of generating a quality position. Garmins with
a DGPS antenna would be at the minimum requirements and a standard L1-L2 Receiver with GNASS
and DGPS link would be preferred.
Mena 3D Drone
The Mena 3d drone is a fixed wing battery operated UAV with a range of 2 hours reaching speeds of
50-70 km / hour. It can be launched from the top of a moving vehicle or a tall scaffold and has a
parachute that deploys during landing. With a battery life of 2 hours flights of 100+ km can be
expected, The Mena comes with Lidar, IR and video cameras .