Airborne laser scanning mission - Algeria

Lidar and Aerial Mapping

Merrett Survey can provide airborne lidar surveys Worldwide for your mining site, mineral licence area or for your infrastructure route whether rail, road, long distance conveyor, pipeline transport or powerlines.

Lidar can provide so many advantages for mine related survey work. Lidar is Light Detection And Ranging (just as Radar is Radio Detection And Ranging), using laser beams to measure distances from the survey aircraft to the ground. The IMU (Inertial Measurement Unit) measures the aircraft’s roll, pitch and yaw and thus corrects the direction of the laser beam producing highly accurate coordinates and heights for the surveyed points.

By firing up to 500,000 points per second the survey aircraft can map the terrain beneath with great rapidity and generate a ‘point cloud’ of data recording the terrain shape in high detail. DTM’s and DEM’s are produced modelling the ground and the top of foliage in forested areas.

Terrestrial lidar – Whilst the scanning technology used in tripod mounted scanners, placed on the ground is the same as that used in the aircraft, our industry tends to use the expression ‘laser scanning’ for the work on the ground, and ‘lidar’ for that used in the air. For our ground based scanning services please refer to our laser scanning page, or our laser scanning website www.laserscanning.co.uk which covers our work across multiple industries.

Airborne lidar survey DTM - mining exploration Greenland

3D data – surveyed by airborne lidar for mine
development site in Greenland. Data is
coloured by height.

Lidar pentration through rain forest - Equatorial Guinea

Another advantage of Lidar is that it can map
the ground surface beneath forest cover to
obtain accurate DTM’s of your mining prospect.

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