Counter-Drone Technologies Could Enhance Safety and Security, but May Have Unintended Effects
SOURCE: GAO.GOV
APR 05, 2022
Uncrewed aircraft systems (UAS), or “drones,” have a variety of important uses—from search and rescue to cinematography. But this technology can also cause problems. For example, in January 2019, a drone was spotted near Newark Liberty International Airport, halting all air traffic activity for over an hour.
Counter-drone technology can detect and—when needed—jam, capture, or disable unauthorized drones. Today’s WatchBlog post looks at our new Science & Tech Spotlight on counter-drone technologies.
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How does counter-drone technology work?
Counter-drone technologies generally fall into two categories: detection and mitigation.
Detection technologies include infrared devices to track heat signatures, radio frequency detection for signals from a drone’s remote controller, and acoustic methods to recognize the unique sounds of drone motors.
Mitigation technologies are those that can repel or intercept a drone. For example, interference signals can jam the communications between the drone and its operator. Other technologies can try to net the drone, shoot it down, or disable it using trained hawks.
Counter-Drone Technology Detects and Jams an Unauthorized Drone
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Who can use counter-drone technology?
Domestically, only four federal agencies have been authorized to deploy counter-drone technologies under certain circumstances. For example:
What are the challenges facing counter-drone technology?
One of the main challenges to current counter-drone technology is that it’s not always effective. For example, detection systems may overlook a drone because of interference or mistake a bird for a drone. And mitigation systems may have a limited range or fail against quick or unpredictable drones.
Another challenge is unintended consequences. For example, counter-drone technology may collect personal information or interfere with nearby communications. Systems that disable drones can lead to damage from errant projectiles or falling drones. Therefore, counter drone technology is usually customized to meet a specific purpose and location.
A final challenge is that no other entities—apart from the four federal agencies listed above—are federally authorized to deploy this technology. Local agencies generally rely on a small number of federal counter-drone units to respond to drone threats in their area.
Key questions for policymakers
With over 2 million drones projected to be in use in the U.S. by 2024, the risks to critical sites and safety are likely to grow. This increase raises several questions for policymakers, including:
Find out more about counter-drone technologies by checking out our new Science & Tech Spotlight.
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