Unmanned surveillance and reconnaissance aerial vehicle

An unmanned surveillance and reconnaissance aerial vehicle, is an unarmed military UAV that is used for intelligence, surveillance, target acquisition, and reconnaissance (ISTAR). Unlike unmanned combat aerial vehicle (UCAV), this type of system is not designed to carry aircraft ordnance such as missiles, ATGMs, or bombs for drone strikes.

Source: Wikipedia — Unmanned surveillance and reconnaissance aerial vehicle (CC BY-SA 4.0)