Unmanned aerial vehicles, also known as "UAVs", are unmanned aerial vehicles that are controlled by radio remote control equipment and self-contained program control devices. They have the advantages of small size, low cost, easy use, low environmental requirements, and strong survivability. They are used in aerial photography, agriculture, plant protection, micro selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspections, disaster relief, film and television shooting, creating romance, etc., which greatly expands the use of UAVs themselves.