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What is counter-drone (C-UAS)?

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In short

Counter-drone, or C-UAS (Counter-Unmanned Aircraft Systems), covers the equipment and procedures used to detect, track, identify and – where legally permitted – neutralise unwanted drones. "Drone protection" is broader still: it includes prevention and the organisational side.

The four steps

  1. Detect – is there a drone in the airspace?
  2. Track – where is it, where is it heading, how fast?
  3. Identify – what drone, is it authorised, is it a threat, where is the pilot?
  4. Mitigate – stop the drone's flight or task.

Most private operators can lawfully go as far as step three; step four is for authorised authorities. A good system performs the first three so quickly and accurately that there is time left for the fourth – or for alerting the authorities.

How systems are classified

By user

  • Civil / public use – events, facilities, security companies: mostly detection and identification
  • Law enforcement – police, prison service: detection and mitigation
  • Military – full spectrum, including kinetic effectors

By threat

  • Single drone – almost always the case in civilian settings
  • Swarm – multiple coordinated drones, requiring different capabilities → Single drone vs. swarm

By form factor

  • Fixed, vehicle-mounted, portable / handheld, wearable → Comparison

By function

Why there is no single "best device"

Every sensor has a blind spot: RF can't see drones in radio silence, radar struggles to separate birds, cameras can't see through fog, acoustics can't hear through noise. In practice we design layered, complementary solutions – based on the site, the risk and the budget.

Related

Knowledge base

The legal framework for counter-drone protection in Hungary (2026)

What is and isn't allowed when defending against drones in Hungary: detection, jamming, downing drones, security guards' powers, data protection and mandatory protection for priority facilities – 2026.

Read

Knowledge base

Fixed, portable or wearable? Comparing form factors

Comparing fixed, vehicle-mounted, portable and wearable counter-drone solutions: coverage, set-up time, integration, cost and operator needs.

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Knowledge base

Glossary

Key counter-drone terms explained: C-UAS, RCS, AESA, micro-Doppler, slew-to-cue, J/S ratio, spoofing, failsafe, Remote ID and more.

Read

Let's talk about your site

Tell us briefly what you need to protect and what your question is. We'll come back with a vendor-neutral recommendation.

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Hungary – in Hungarian and English

If a drone poses an immediate danger, call 112.