C-UAS Glossary

C-UAS refers to policies, technologies, and operational strategies used to detect, track, identify, and mitigate unauthorized drones in protected airspace. C-UAS detection technologies may include radar, electro-optical/infrared sensors, acoustic sensors, traditional RF detection systems, and RF-cyber capabilities. Mitigation approaches may include kinetic methods, electronic jamming, and RF cyber-takeover capabilities.

The optimal approach depends on the operating environment, threat profile, and operational objectives. Modern C-UAS doctrine places special emphasis on non-disruptive, non-kinetic options when operating in sensitive, urban, and critical infrastructure environments where public safety and operational continuity are paramount.

For more insights into aligning your technology and operations, read about Building a Counter-UAS Strategy.

A non-kinetic, non-jamming-based drone defense capability used for the controlled mitigation of unauthorized, rogue drones. It enables security teams to safely assume control of a target drone and direct it to a predefined safe landing zone, or execute a fend-off, without broad signal disruption or physical impact.

A DIY or custom-built drone is assembled or modified using commercially available components. Although these drones can have legitimate applications, they may also be adapted for illicit activities, such as smuggling, unauthorized intelligence gathering, or attack. Their designs and communication methods can vary, but custom-built UAVs are not inherently undetectable. RF-cyber capabilities can detect many of these UAVs.

The command link between a drone and its remote operator that governs navigation, flight behavior, and overall operational intent. In counter-drone defense, managing or assuming control of a drone offers an effective option among mitigation approaches, enabling security forces to disconnect the remote operator and guide the drone to a safe landing. They can also execute a fend-off, without relying on broad signal disruption, or physical impact. For more insights, read our piece on how to control a drone.

The foundational phase of airspace security that senses and identifies unauthorized drones entering protected perimeters to establish real-time situational awareness and early warning. Detection relies on a variety of sensing technologies, including radar, electro-optical/infrared cameras, acoustic sensors, and radio frequency systems, each offering distinct advantages depending on terrain, visibility, line-of-sight, and environmental background noise.

Read more about evaluating drone detection strategies.

An electronic technique that transmits broad-spectrum radio noise to disrupt communication between an unauthorized drone and its pilot. While sometimes utilized as a secondary or fallback layer in multi-sensor defense stacks, jamming comes with operational risks, including potential interference with nearby cellular service, Wi-Fi networks, and emergency communications. Click here to learn about jamming compared to other drone mitigation technologies.

The decisive response phase of counter-drone operations where security personnel act against a rogue drone threat to support airspace safety and operational continuity. Modern mitigation options range from legacy kinetic methods and broad-spectrum signal blocking, to surgical cyber-takeover, which safely controls and guides hostile drones to a secure landing, without collateral damage or operational disruption.

Learn how to compare and contrast the mitigation technologies available today.

Real-time location tracking that pinpoints the exact coordinates of both an airborne rogue drone and its ground pilot launch point. It empowers law enforcement and security forces to dispatch targeted ground teams directly to the threat source.

This capability is integrated into EnforceAir’s RF cyber-detection, providing operators with a clearer picture of the drone, its pilot or remote controller, and its take-off point.

A UAS whose presence, behavior, payload, flight path, or operator activity presents a potential or confirmed risk to people, assets, operations, or protected airspace. An unauthorized drone is not automatically hostile – its authorization status and operational context should be assessed to determine the level of risk.

D-Fend Solutions’ flagship counter-drone technology platform, built on RF cyber-takeover capabilities to deliver precise detection, location tracking, and safe control of rogue drones in complex environments. Designed to protect operational continuity and eliminate collateral damage, EnforceAir supports flexible deployment options – including stationary, vehicular, tactical, and backpack configurations – and integrates seamlessly into layered defense architectures.

Learn more here.

A hostile drone operating with malicious or dangerous intent, such as executing attacks, conducting illegal surveillance, smuggling contraband across borders or into secure facilities, or disrupting critical infrastructure and public events. Hostile drones require rapid detection and surgical mitigation to overcome threats, while safeguarding public safety.

Physical defense methods that disable or destroy unauthorized drones using projectiles, nets, lasers, high-power microwaves, or direct impact. While traditional in open military battlefields, kinetic approaches present significant risks in urban areas, stadiums, and airports, due to falling structural debris, secondary hazards, and potential collateral damage. Explore soft-kill vs. hard-kill counter-drone technology trade-offs.

A multi-sensor airspace security strategy that integrates complementary detection and response tools – including RF-cyber, radar, optical cameras, acoustic sensors, and optional jamming – into a single command-and-control platform. It provides comprehensive situational awareness, while prioritizing non-disruptive RF-cyber responses in sensitive settings.

Layered drone countermeasures combine complementary C-UAS technologies because no single sensor can detect, identify, and verify every UAV under every condition.

D-Fend Solutions’ EnforceAir PLUS multilayer counter-drone system integrates these complementary capabilities into a compact, cyber-driven solution.

A counter-drone response used to take controlled action against unauthorized or hostile drones, without electronic jamming or broad radio-frequency disruption. Because it avoids broad signal disruption, non-jamming mitigation can reduce the risk of negatively impacting nearby Wi-Fi networks, cellular services, and emergency communications, while taking action against rogue drones. Evaluate and compare different counter-drone mitigation technologies.

Airspace security solutions that counter drone threats without using physical force, projectiles, nets, lasers, or high-power microwave systems. By avoiding physical impact, these solutions reduce the risk of falling debris, structural damage, or secondary hazards in crowded urban areas, stadiums, and airports.

Booz Allen Hamilton named non-kinetic C-UAS as a top emerging technology back in 2024.

The ongoing, uninterrupted execution of everyday commercial, municipal, emergency, and military operations during an airspace security incident. It allows for critical communications, public events, transportation, and authorized drone flights to proceed seamlessly, while hostile aerial threats are resolved.

EnforceAir cyber-takeover technology allows for operational continuity, one of our core technology concepts, which is key for communications, transportation, commerce and everyday life.

A designated, pre-approved ground location away from crowds, critical infrastructure, and active travel routes where a hijacked drone is safely landed. It prevents unpredictable crash sites, promotes bystander safety, and keeps the physical drone intact for forensic investigation, where legally authorized and operationally appropriate.

Read more.

A modern, non-kinetic C-UAS technology category used to detect, track, identify, and locate unauthorized or hostile drones and their pilots. RF cyber-takeover is the associated mitigation capability, allowing authorized personnel to assume control of a selected drone and direct it to a predefined safe landing zone or execute a fend-off, without jamming or physical impact.

Because it does not rely on broad signal disruption, RF cyber supports operational continuity, surrounding communications, and the continued operation of authorized drones, making it suitable for sensitive environments.

An end-to-end operational framework for managing unauthorized airspace incursions. The lifecycle guides security teams through early detection, accurate location tracking of the drone and pilot, distinction of authorized status, safe takeover mitigation, and intact drone recovery for post-incident intelligence gathering – where legally authorized and operationally appropriate.

Explore EnforceAir’s capabilities across the rogue drone incident lifecycle.

Any drone flying in protected or restricted airspace without proper clearance, authorization, or registration on an approved security flight list. Unauthorized drones encompass both careless recreational flights and deliberate hostile threats, requiring advanced C-UAS systems to distinguish friendly flights from potential risks, and execute safe, targeted responses.

Unauthorized drones can delay disaster response. Learn what can be done.