Installing an anti-drone system?

Question

Quadcopter

Hello! Please tell me what to use in this case or point to the sources to solve the problem: It is
necessary to protect the territory from drones (quadcopters), ideally, the system should itself determine that a drone has flown into the territory and shot it down.
I understand that it sounds fantastic, but is there something that can perform at least the first function, react to a drone flying into a given area and notify?
The site can be (starting from a residential courtyard and up to a large field).

Answer 1

Hello!
There is nothing fantastic in your task: an optical-radar complex is used to automatically detect a drone in a given area. The radar scans the surrounding area and automatically detects drones at a great distance. The signal from the radar tells the optics the position of the target and points the optics at the drone. The personnel decides to destroy or turn on the electronic warfare system that suppresses the drone’s control channel, which forces it to either sit down or return to base.
If your task is still relevant - I can provide more detailed information on a specific system to solve it.

Answer 2

Here is an overview of anti-drone defense systems