Ana Sayfa English Common ways counter-drone technology detects drones

Common ways counter-drone technology detects drones

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Counter-drone technology works in two steps by detecting and then defeating a drone. Today I’ll be looking at how rogue drones are detected thanks to a recent factbook by Australian counter-drone company DroneShield.

As drones have become more present worldwide, there has also been an increase in illegal and dangerous drone activity. This has resulted in the need for counter-drone solutions to keep them out of sensitive airspace.

DroneShield is one of the companies leading the counter-drone race with its line up of drone detection and defeating products, including the famous drone-destroying gun.

How drones are detected

Radio frequency (RF)

RF scanners are used to scan a known range of frequencies commonly used by drones to operate. The sensors can stay up to date with the latest drones, thanks to an updated database with all the drones. The RF system is passive, meaning it doesn’t transmit anything. It just receives signals from the drones in the area.

An RF system can pick up a drone’s signal and then sniff out the controller’s signal and approximate location. It can also tag and filter out false alarms that can be caused by Wi-Fi scanners and sniffers. This also means the system improves over time as it learns more about the signals being received.

DroneShield’s RfOne MK 2 system uses radio frequencies to detect nearby drones. The system best works when two or more RF sensors are used, as this allows the drone to be located by calculating various angles and using math to find the drone in 3D space.

There are essentially 5 categories of UAS RF communications globally:

  • Remote Control (RC) hobbyist drones, licensed for control in traditional shared hobbyist frequency bands. These bands are not designated for use outside of low baud rate telemetry control
  • ISM (Industrial Scientific and Industrial) band hobbyist UAS that are essentially license-free but regulated in terms of applications, output power, and spectral purity
  • Commercial drones, operational as compliant within allocated bands by the respective country’s civil regulator
  • Military drones, not regulated by civil regulators who use traditional military communication bands, details of which are normally classified

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