MICRO UNMANNED AERIAL VEHICLE BASED REMOTE SENSING METHOD AND APPLICATION FOR EMERGENCY SURVEY OF INDIVIDUAL GEOHAZARD

The large and professional unmanned aerial vehicle based remote sensing (UAVRS) system has been widely used for the emergency survey of the wide range of geo-hazards. In this paper, the more simple and flexible micro-UAVRS method for the emergency survey of individual geo-hazard is put forward, based on a number of successful practices of emergency survey for geo-hazards in the Three Gorges Reservoir in recent years. The method includes: assembling a multi-rotor micro-UAVRS system that is more applicable for the emergency survey of the individual geo-hazard; developing the specific implementation process; and elaborating some crucial technologies and methods such as the arrangement and measurement of ground control points, the design of flight plan according to the features of geo-hazard, the control of the micro-UAVRS' flight and photos acquisition, and the image processing, etc. Practice shows that, using the micro-UAVRS method for the emergency survey of individual geo-hazard is useful, and capable of achieving the goal of fast & efficient, because the method can not only greatly reduce the work time, strength and risks, but also provide the high-precision remote sensing results and data.