Radio frequency jamming is a common method employed as a drone countermeasure.
Unlike some other methods, it doesn’t physically destroy the drone. What it does is interrupt the communication link between the drone and the person controlling it.
Here’s a simplified description of how it works:
Drones are typically controlled by a radio signal, which is a specific type of frequency. A radio frequency jammer will broadcast a signal on these same frequencies at a stronger intensity. This causes interference, blocking the signals coming from the drone’s controller.
This can cause the drone to lose control, often causing it to land, return to its starting point, or simply hover in place until its battery dies. It’s a non-destructive way of neutralizing a drone threat, although it requires a good understanding of the frequency bands that drones typically operate on. It’s also important to note that radio frequency jamming can affect other devices in the vicinity working on the same frequency, so it should be used responsibly.
However, laws on using RF jammers vary by country, so their usage would need to adhere to the specific regulations of the area where they’re being used.