Unmanned aircraft, also known as "UAVs" for short, are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices. UAVs are actually a general term for unmanned aircraft. From a technical point of view, they can be divided into: unmanned fixed-wing aircraft, unmanned vertical take-off and landing aircraft, unmanned airships, unmanned helicopters, unmanned multi-rotor aircraft, unmanned paragliders, etc. Compared with manned aircraft, it has the advantages of small size, low cost, easy use, low requirements for combat environment, and strong battlefield survivability. As unmanned aircraft are of great significance to future air combat, major military countries in the world are stepping up the development of unmanned aircraft. In November 2013, the Civil Aviation Administration of China (CA) issued the "Interim Regulations on the Management of Pilots of Civil Unmanned Aircraft Systems", and the China AOPA Association is responsible for the relevant management of civil unmanned aircraft. According to the Regulations, drone operations in mainland China can be divided into 11 categories based on the size of the aircraft and the flying airspace. Among them, only drones weighing more than 116 kilograms and airships weighing more than 4,600 cubic meters flying in integrated airspace are managed by the Civil Aviation Administration. The rest, including other flights such as the increasingly popular micro aerial photography aircraft, are managed by industry associations or are the responsibility of the operators themselves.
