Quadcopters occupy the same flight regime as most clutter does: https://en.wikipedia.org/wiki/Clutter_(radar) https://en.wikipedia.org/wiki/Clutter_(radar) Tru

Quadcopters occupy the same flight regime as most clutter does: https://en.wikipedia.org/wiki/Clutter_(radar) https://en.wikipedia.org/wiki/Clutter_(radar) Truth is, a Patriot system would probably also miss something like this unless it had special SHORAD or CIWS defenses alongside it. A lot of these drones are going to be invisible to conventional radar if they want to be.