How can drones be used for disaster management

With the gradual increase of natural disasters, the hidden danger to human safety is more and more serious. In many cases, it is not possible to examine the specific situation closely. In order to further improve the prevention and control of geological disasters, maximize the safety of people's lives and minimize property losses, no man or machine plays a key role in the investigation of potential geological disasters. The UAV uses a combination of site survey and aerial photography to determine the specific location, harm type, susceptibility and harm degree of geological hazards. Conduct investigation, analysis, make detailed records, and put forward feasible prevention and control measures.

After geological disaster occurs, the most important data for rescue work is the first-hand survey data of the disaster site. Timely investigation of the occurrence of the disaster, the scope of impact, trapped people and property, traffic conditions and potential secondary disasters, can be efficient and reasonable rescue. Provide technical support.

Routine investigation will cause on-site disaster injury again. Considering the slow speed and low precision, the high requirements for timeliness of geological disaster rescue are limited. However, UAV has low requirements for takeoff and landing, flexible flight, fast speed and carrying professional cameras. , can quickly generate orthophoto, achieve real-time HD video transmission, let the ground personnel know the scene details in the first time. Provide technical support for rescue, disaster assessment and disaster investigation to ensure efficient and rapid implementation of emergency work.

First, the drone can fully understand the terrain, climate conditions and other basic information of the region by using data acquisition and processing. Through aerial photography. Ensure that the drone is in operation by looking for flat terrain and unobstructed drone lifting position. The operator's line of sight and the highest point in the area do provide the basis for route planning.

Secondly, on the basis of field survey, a detailed flight plan should be formulated to determine flight parameters, and routes should be designed according to aerial photography altitude, proportion and resolution.

Field test flights are then conducted to check the status of the drone, calibrate the compass, adjust the camera exposure and other parameters. After the preparation is completed, the flight should follow the pre-planned route and always pay attention to the flight safety and battery power of the UAV to ensure its safe return.

Finally, through the data processing system, the attitude information (POS data) and the original data of the task load of the UAV are processed, formatted and preprocessed, and the image data such as ortho projective image map (DOM), digital surface model (DSM) and digital line graph (DLG) are generated.

To sum up, UAVs participate in disaster assessment, monitoring management and rescue work, guard one side of the land, and play a positive role in safeguarding people's life and property safety.