Method, device and system for measuring density of aerial ecological target object

The invention relates to a method, equipment and a system for measuring the density of an aerial ecological target object. The method comprises the following steps: for any one side area, determining the shooting conical area volume of each camera and the number of aerial ecological target objects according to a photogrammetry principle; and determining the target object density of the side area according to the shooting cone volume and the target object number. The unmanned aerial vehicle is adopted to carry the cameras, the photographing cone volume of each camera and the number of the target objects in the camera are determined according to the photogrammetry principle, and then the target object density is determined. The radar is assisted in completing large-range quantitative monitoring work of the aerial ecological target, real-time reporting of insect pests and insect disasters and early warning of areas where the disasters are about to spread can be achieved, the relevant data of the target object is