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Small drones have created an uncomfortable economic problem for air defense. An inexpensive UAV may cost only hundreds or a few thousand dollars, yet the missile used to destroy it can cost well above $100,000. Electronic warfare offers a cheaper alternative, but jamming becomes less useful when a drone follows a preprogrammed route or does not depend on a conventional radio link.
A new interceptor from Perseus Defense is being developed to fill that gap with a kinetic counter-drone weapon costing approximately $2,500 per round, according to the company.
The Mk-III interceptor was recently tested at Yuma Proving Ground during Falcon Peak 26.2, a counter-small-UAS experimentation campaign involving several U.S. defense organizations. During the demonstration, the missile was fired from an eight-round launcher.
Unlike a jammer, the interceptor does not need to interfere with the drone’s navigation or communications. It uses a hit-to-kill approach, physically colliding with the aircraft to destroy it.
That distinction is becoming more important as drone technology evolves. Radio-frequency jamming can disrupt UAVs controlled through wireless links, but some aircraft can navigate autonomously along stored routes. Others use technologies such as fiber-optic control cables that make conventional RF interference ineffective. A physical interceptor provides another defensive option when disrupting the connection is not possible.
The company is also positioning the weapon for environments where minimizing collateral effects matters, including military installations. Traditional air-defense missiles may carry larger warheads and produce additional debris, making the consequences of an interception an important consideration around populated or sensitive areas.
According to Interesting Engineering, the demonstrated system can integrate with Anduril’s Lattice command-and-control software, allowing it to become part of a wider counter-UAS network rather than relying entirely on standalone operation.
Separate reporting from the exercise identified an interceptor called Harpe, measuring approximately 61 centimeters with a reported engagement range of 2 kilometers. Its launcher weighs less than 36 kilograms, making the system compact enough to deploy without a large vehicle or permanent installation.
That relatively small launcher also addresses another counter-drone requirement: magazine depth. With eight interceptors immediately available, a single position can respond to several threats before needing to reload.
The technology is being evaluated as military installations look for better protection against small UAV incursions. Repeated unidentified drone flights over sensitive facilities in recent years have highlighted the difficulty of responding quickly while balancing cost, safety and legal restrictions.
The interceptor is not intended to replace electronic warfare or larger air-defense systems. Instead, it provides another layer between them: a compact interceptor for drones that cannot simply be jammed, at a cost intended to make physically destroying inexpensive UAVs considerably more sustainable.
