What is the term for a UAS that can operate without human intervention?

The term for a UAS that can operate without human intervention is "Autonomous UAS." This classification refers to systems that are capable of performing missions and making decisions on their own, relying on onboard sensors and software algorithms to navigate, sense their environment, and carry out tasks without direct control or input from a human operator. Autonomous UAS can utilize artificial intelligence or pre-programmed instructions to execute complex operations, which is essential for a variety of applications such as surveillance, agriculture, or search and rescue missions.

The other options do not represent systems that operate without human input. Remote UAS indicates a system that is controlled from a distance by a human operator, while Controlled UAS implies some level of human oversight or command. Manual UAS suggests that the operation is entirely in the hands of the operator, who directly maneuvers the aircraft. Thus, the defining characteristic of an Autonomous UAS is its ability to function independently of human intervention, making it the correct term for the given definition.