ZHAO Penghui,LI Junjie,YE Tangjin,et al.Application of Micro⁃UAV Remote Sensing in Emergency Mountain Hazards Monitoring of Alpine Valley Region[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(03):448-454.
ZHAO Penghui,LI Junjie,YE Tangjin,et al.Application of Micro⁃UAV Remote Sensing in Emergency Mountain Hazards Monitoring of Alpine Valley Region[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(03):448-454. DOI: 10.13409/j.cnki.jdpme.201910037.
Application of Micro⁃UAV Remote Sensing in Emergency Mountain Hazards Monitoring of Alpine Valley Region
Frequent mountainous natural disasters in alpine mountainous and ravine regions can easily block rivers to form dammed lakes. These disasters threaten the safety of downstream towns and infrastructures. The use of the professional unmanned aerial vehicle (UAV) remote-sensing systems is limited in such regions because of a lack of suitable landing sites, inaccuracies in route planning, and the complicated nature of operational processes. To tackle these challenges in obtaining observational data after landslides in alpine areas, a light and small UAV is proposed for disaster monitoring applications. The performance of the micro-UAV was explored in a flight recording data from the No. 2 landslide of the 102 landslide group and debris flow in Guxiang valley in southeast Tibet. The feasibility and accuracy of this method were evaluated by a comparison between the micro-UAV measurments and the modeling results from the three-dimensional laser point cloud. The results show that the three-dimensional model based on the micro-UAV data is accurate to the level of decimeters. The proposed method is more accurate in the plane direction than in elevation, and the maximum measurement error is less than 9.7%. These results show that as a method to quickly obtain data of a disaster, the proposed UAV method can be applied to the field of monitoring alpine emergencies.
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