Drones for military use are typically classified in three broad categories: UAVs (Unmanned Aerial Vehicles), UGVs (Unmanned Ground Vehicles) and USVs (Unmanned Surface Vehicles).22 UAVs are either remote controlled aircraft (e.g. flown by a pilot at a ground control station) or can fly autonomously following pre-programmed flight plans or more complex dynamic automation systems. 更多
