Evaluation of a UAV-LiDAR system for mapping geological structures in an open pit highwall
Paper
Paper/Presentation Title | Evaluation of a UAV-LiDAR system for mapping geological structures in an open pit highwall |
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Presentation Type | Paper |
Authors | Raval, S, Banerjee, B P, Shen, X, Masoumi, H and Tannant, D |
Journal or Proceedings Title | Proceedings The Fourth Australasian Ground Control in Mining Conference (AusRock) |
Journal Citation | pp. 496-503 |
Number of Pages | 10 |
Year | 2018 |
Place of Publication | https://www.ausimm.com/publications/conference-proceedings/the-fourth-australasian-ground-control-in-mining-conference-ausrock/evaluation-of-a-uav-lidar-system-for-mapping-geological-structures-in-an-open-pit-highwall/ |
Web Address (URL) of Paper | https://www.ausimm.com/publications/conference-proceedings/the-fourth-australasian-ground-control-in-mining-conference-ausrock/evaluation-of-a-uav-lidar-system-for-mapping-geological-structures-in-an-open-pit-highwall/ |
Web Address (URL) of Conference Proceedings | https://www.ausimm.com/publications/conference-proceedings/the-fourth-australasian-ground-control-in-mining-conference-ausrock/ |
Conference/Event | The 4th Australasian Ground Control in Mining Conference (AusRock) |
Event Details | The 4th Australasian Ground Control in Mining Conference (AusRock) Event Date 28 to end of 30 Nov 2018 Event Location Sydney, Australia |
Abstract | Structural mapping of pit walls can be performed using digital images and photogrammetry software, but the performance is limited by weather and environmental conditions including dust, rain and light. On the other hand, active sensors such as terrestrial laser scanners (TLS) and total stations (TS) suffer from vertical orientation bias and occlusions when persistent discontinuities dip at the same angle as the scanner line-ofsight. The recent development of the compact light detection and ranging (LiDAR) systems has made it possible to mount these sensors on unmanned aerial vehicles (UAVs) or drones which offer the potential to overcome limitations that are inherent in existing mapping systems. This study details the research involving integration and application of an advanced UAV-LiDAR system for structural mapping of a highwall. A state-of-the art laser scanner with an inertial measurement unit (IMU) and real-time kinematic global positioning system (GPS) was integrated on to a UAV. The system was first tested in a laboratory condition. Then the UAV-LiDAR system was employed to map a highwall of a coal mine. The planned flight trajectories tested the system at variable distances from the highwall face and at various speeds. The raw data collected from individual sensors were fused, filtered to remove noise, and segmented to produce a surface scan model. Finally, the point density and surface coverage were measured using the surface scan model of the highwall. The parameters were compared with equivalent measurements computed from a reference TLS data. The study demonstrates the capabilities of a UAV-LiDAR system to generate accurate and occlusion free data for mapping highwall geological structure with very quick and efficient flights in the field. |
ANZSRC Field of Research 2020 | 401304. Photogrammetry and remote sensing |
401301. Cartography and digital mapping | |
401905. Mining engineering | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of New South Wales |
Monash University | |
University of British Columbia, Canada |
https://research.usq.edu.au/item/z308z/evaluation-of-a-uav-lidar-system-for-mapping-geological-structures-in-an-open-pit-highwall
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