What are the advantages of mapping drones?

① High cost performance. At present, the price of domestic surveying and mapping drones on the market is about 100 thousand to several hundred thousand, which can be reused many times, and it is not easy to be damaged except for major accidents, and there is no additional use cost. In areas with harsh natural environment such as plateau and offshore, even if an accident occurs, the loss will not be great. Images with a resolution of up to 0.05 meters are more accurate than satellite images.

② Easy to carry and transport. The wingspan of fixed-wing mapping UAV is generally less than 3 meters, and it is easy to disassemble. During the execution of the project, the operator and all the equipment can be transported to the destination at the same time simply by putting the disassembled UAV equipment into an ordinary van. After arriving at the scene, the assembly and debugging of the drone can be completed within half an hour.

③ No site requirements. The traditional take-off mode of mapping UAV is generally taxiing, which requires a relatively horizontal runway of 30 meters to 50 meters to take off. With the introduction of emerging equipment, the venue is no longer an obstacle for the take-off and landing of drones. At present, the common unmanned aerial vehicles can not only slide up, but also take off by catapult or hand throw, and can parachute directly when landing, which is very convenient for field work. The ejection frame can be fixed on the roof of the working vehicle or installed on the ground after deployment.

(4) flexibility. The flying height of mapping UAV can be determined according to the required image resolution. In most cases, the flying height of UAV photogrammetry is generally 100 m to 1000 m. Most of the cameras carried by mapping drones use fixed-focus lenses, and the difference of flying height directly affects the resolution of images. The ideal data can be obtained by designing flight route and determining flight altitude before flight.

⑤ Less affected by the weather. In traditional aerial photography, the problem that large aircraft aerial photography is worried about is that the weather conditions are not ideal. Once cloudy weather occurs, it will seriously affect the imaging effect. Uav photogrammetry but mapping the flying height of UAV determines that the thickness of clouds will basically not affect imaging, especially in the case of obtaining high-resolution images and low flying height.