Unmanned aerial vehicle fixed-point fire extinguishing method under satellite positioning system denial condition

The invention relates to an unmanned aerial vehicle fixed-point fire extinguishing method under a satellite positioning system denial condition. The method comprises the steps that ground image information is shot through a camera module according to a preset time interval, landmark points of the ground image information are recognized through an image recognition algorithm, and the landmark points are matched with landmark points pre-stored in a memory module; the initial position of the unmanned aerial vehicle at the current moment is obtained by communicating with a pre-deployed UWB base station, the current position information of the current unmanned aerial vehicle is obtained by adopting a three-point positioning method according to the initial position and a landmark point, and the unmanned aerial vehicle is controlled to fly to the target position according to comparison between the current position information and the target position. And the electronic ammunition is put for fixed-point fire extingui