Unexploded ordnances (UXO) pose a significant public safety hazard in many parts of the world. They occur on or near the surface and down to depths of several meters below the ground. One of the most established techniques for ordnance detection is magnetics. This method is very effective at locating buried metallic objects such as UXO. MGT is very successful in the use of drones which allow for cost effective wide area scanning with near 100 % coverage and near 100 % detection of subsurface ordnance or features indicative.
In recent years an important development in aeromagnetic surveys is the application of unmanned aircrafts. Compared with ground surveys UAVs allow faster and cheaper coverage of large areas. Such systems can be used at low altitude and in hostile environments that would not allow helicopter surveys. The use of UAV is ideal for collecting very dense data over small grids. Autonomous flight capabilities are very efficient and enable using drape flying in which the data is collected at constant terrain clearance.
Mining & Groundwater
Airborne Electromagnetic methods (AEM) are an efficient way in geological surveying and have been widely used in mineral exploration, and environmental monitoring. MGT has developed a Multicopter borne AEM technique that uses sources located on the ground. The survey lines are flown perpendicular to these sources. The fixed-source methods are most effective and have marked advantages over alternative EM methods. A definite advantage of the UAV borne semi-airborne survey is that the time taken to acquire the data is considerably less than for a comparable ground survey.
3D Terrain Modelling
For field measurements, we use specific topographical UAVs with the accuracy of GNSS RTK technology. Using our in-house built multicopters we can provide digital surface models, 3D point clouds and orthophoto maps. The ground resolution is between 1 cm / pixel and 10-20 cm / pixel, depending on clients request and task specifications.Forestry Management and Planning, Flood Modelling, Mapping and Cartography, Urban Planning, Coastline Management, Oil and Gas Exploration, Quarries and Minerals (Volumetrics and Exploration).