Countermeasures

Typical Countermeasures:

RF Jamming
(control signals, GPS,
video downlink)

Identifying the communication and control signal frequency and creating a stronger signal to take control of the drone.

Digital Eagle portable drone jammer QR-07S3 

Spoofing

Sending GPS-like signals toward the

UAV, aligning them with authentic 

signals at the UAV’s GPS antenna, 

gradually overriding original GPS 

signal to take control of the drone. 

What can we do to protect ourselfes against drones? 

Electronic jamming

Radiating interfering signals toward the drone’s radar, blocking the receiver with highly concentrated energy signals.

Long range effectors

  • High Power Microwave 

Generating an Electromagnetic Pulse (EMP) capable of disrupting electronic devices.

  • High-Energy Lasers

Producing an extremely focused beam of light, or laser beam, destroying the drone’s structure and/or the electronics.

Kinetic

Hard kill technology encompasses projectile weapons that physically damage the drone or knock it to the ground. Kinetic methods could include nets, bullets, missiles, or another collision drone.

Nets:

  •  Net Cannon fired from the ground

SkyWall : SkyWall300 Drone Defence System

 

  •  Net cannon fired from another drone

What can we do to protect ourselfes against drones? 

 

  •  Hanging net deployed from a ‘net drone’

     Capture dangerous drones by net 

 

Physical Interception

Interception drone, catches a rogue drone e.g. with a drag line.

Simple Drone Capture Device

Birds

Taking advantage of the natural 

hunting instincts of eagles and 

hawks

Dutch police use eagles to hunt illegal drones 

How to choose a C-UAS system?

There is no single C-UAS which will be ideal for all scenarios

Drawbacks of almost all drone neutralisation techniques:

  •  RF jamming systems 
  •  Spoofing systems
  •  Kinetic systems
  •  Long-range effectors

 

Factors to be considered when selection counter measures/neutralisation measures:

 

  • Disturbing communication systems
  • Disturbing navigation and other electronic systems
  • Collateral damage
  • Range
  • Time to reload
  • Accuracy
  • Ease of use
  • Compliance with the law and regulations

 

  • Start with producing specification, defining what needs to be protected and against what types of drones
  • Define countermeasures that are allowed to be used 
  • Based on these, produce requirements for detection, tracking, classification and investigation
  • Most likely, more than one type of sensors will be required

 

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