The invention discloses a
plant protection unmanned aerial vehicle operation method fusing
weed recognition and real-
time variable spraying, and the method comprises the following steps: employing a
plant protection unmanned aerial vehicle to carry a multispectral sensor, collecting
multispectral data in real time, and generating a high-resolution
multispectral image; converting the
radiation intensity value into an actual
reflectivity value by using a spectral
reflectivity standard plate; according to the generated
multispectral image, an NDVI value is calculated in real time through an airborne calculation module; in combination with flight path data, mapping the NDVI index and the geographic position of the flight operation; the classification standard of the NDVI value is adjusted in combination with a
machine learning
algorithm, and a spraying operation prescription map is generated; the electronic control spraying device adjusts the spraying flow in real time; and establishing a spraying model, and calculating an adjustment coefficient alpha to obtain the average
pesticide application amount Y per mu. According to the
plant protection unmanned aerial vehicle operation method, the spraying amount can be adjusted according to field
weed distribution and
crop growth vigor, the precision of plant protection operation is improved, the
pesticide usage amount is reduced, and environmental
pollution is reduced.