Agricultural drones for fruit trees application China is the world's largest country with the largest fruit planting area and output. If the penetration rate of field crops can be achieved, the prospects of fruit tree flying prevention are limitless. However, compared with field crops such as rice and wheat, fruit trees have the characteristics of taller plants, thicker canopies, and steep terrain (especially fruit trees in southern mountainous areas). Agricultural drones have a long way to go to achieve good operational results. For agricultural drones to be well used in fruit tree areas, the following performance indicators should be achieved:
(1) to achieve automatic ground imitation, that is, to be able to fly at a fixed relative height in steep mountains;
(2) to achieve good coverage of fog droplets , and the open space should not be sprayed;
(3) Avoid excessively high concentrations of chemical liquid or strong wind field damage to fruit trees and fruits. To solve the problem of automatic ground imitation, the previous solution is often to obtain a 3D model through aerial photography and computer mapping by a surveying and mapping drone, and finally generate a 3D route. The advantages of this method are high accuracy and the ability to identify obstacles, but the disadvantages are high cost (need to purchase additional surveying and mapping agriculture with drones, high-configuration computers) and complex processes.
