无人机是无人驾驶飞机的简称（Unmanned Aerial Vehicle），是利用无线电遥控设备和自备的程序控制装置的不载人飞机，包括无人直升机、固定翼机、多旋翼飞行器、无人飞艇、无人伞翼机。广义地看也包括临近空间飞行器（20-100 公里空域），如平流层飞艇、高空气球、太阳能无人机等。(Unmanned Aerial Vehicle (UAV) is a kind of unmanned aircraft which uses radio remote control equipment and self-contained program control device, including unmanned helicopter, fixed-wing aircraft, multi-rotor aircraft, unmanned airship and unmanned parachute-wing aircraft. Broadly speaking, it also includes near space vehicles (20-100 km airspace), such as stratospheric airships, high-altitude balloons, solar unmanned aerial vehicles and so on.)