Draft:Counter-drone system

• Comment: Topic does not appear to have significant coverage in reliable, secondary sources. All references are primary sources defining EU and ICAO policy and responses to events. Please see WP:GNG, WP:CITE, and WP:PRIMARY for more information. nf utvol (talk) 02:51, 4 July 2026 (UTC)

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Counter-unmanned aircraft system (counter-UAS, C-UAS) or counter-drone system is a set of organisational, legal and technical measures used to detect, identify, track and respond to unauthorised, hazardous or hostile unmanned aircraft systems (UAS).

Counter-UAS is distinct from UTM and U-space, which are intended to enable and manage lawful drone operations. Counter-UAS addresses drones that are unauthorised, non-compliant or otherwise considered a threat to safety, security or protected infrastructure.

History

The growth of small unmanned aircraft in the 2010s led to increased concern about unauthorised drone activity near aerodromes, critical infrastructure and public events. In response, aviation and security authorities developed dedicated procedures and technical systems for drone detection, incident management and, where permitted by law, active countermeasures.

By the early 2020s, both the International Civil Aviation Organization (ICAO) and the European Union Aviation Safety Agency (EASA) had published dedicated guidance on the management of unauthorised drones, especially in the vicinity of airports and civil aviation infrastructure.

The rapid expansion of drone warfare during the 2020s, especially in the Russo-Ukrainian War, increased attention to counter-UAS as a distinct field combining surveillance, air defence, electronic warfare and force protection. Defence analyses of the conflict have highlighted the importance of layered sensing, rapid adaptation and cost-effective responses against both reconnaissance and attack drones.

Functions

A counter-UAS system typically supports some or all of the following functions:

• detection of an unmanned aircraft;
• identification and classification of the object or signal source;
• tracking of the aircraft and, in some cases, its operator;
• threat assessment;
• selection of an appropriate response;
• documentation and coordination with aviation, law-enforcement or security authorities.

Components

Counter-UAS architectures vary by jurisdiction and use case, but they may include:

• radar systems;
• radio-frequency sensors;
• electro-optical and infrared cameras;
• acoustic sensors;
• command-and-control software;
• interfaces to remote identification or airspace-management systems.

The response component depends on law and operational context. In some settings, the response may be limited to alerting, surveillance, airspace restrictions or interruption of airport operations. In other cases, competent authorities may be permitted to employ technical countermeasures. ICAO guidance stresses that any response should avoid creating additional unmanaged aviation safety risks.

Applications

Counter-UAS systems are used primarily for the protection of:

• airports and aviation infrastructure;
• critical infrastructure;
• government and military facilities;
• major public events;
• industrial and energy sites.

Regulation

Because counter-UAS activities may affect communications, radio spectrum, aviation safety, privacy and law-enforcement powers, their deployment is generally regulated by law. In the civil aviation context, ICAO and EASA have published guidance focused especially on airport incident management and protection of civil aviation infrastructure.

See also

• Unmanned aircraft system
• U-space
• UTM
• Aviation security
• Critical infrastructure

References

Category:Unmanned aerial vehicles Category:Air defense Category:Aviation security Category:Electronic warfare Category:Military technology