The ability to defeat drones is increasingly proving to be more important than the ability to field them. That is perhaps the most important lesson emerging from the wars in Ukraine and Iran—a lesson Indian military planners need to factor into preparations for the inevitable next conflict across our western border.
According to General Oleksandr Syrskyi, Commander-in-Chief of the Armed Forces of Ukraine, most Russian Shahed drones and other aerial attack systems neutralized by Ukrainian forces are now being brought down by interceptor drones.
Not helicopter gunships, armed light trainers, directed-energy weapons (DEWs), low-cost air-defence missiles, or specialised anti-aircraft guns firing programmable airburst ammunition. No—just interceptor drones.
Operationally effective interceptor drones have been around for more than a year. It is time DRDO took note of them.
Interceptor drones are optimised for low cost and typically destroy their targets by ramming them. Some variants employ a small warhead to increase the probability of a successful interception.
Currently, the three most prominent interceptor drones operating in Ukraine are:
* Sting (Ukraine) * Merops AS-3 Surveyor (United States) * Yolka (Russia)
In the following sections, we examine their features, capabilities, and key differentiators.
FPV Interceptor Drones
Interceptor drones were initially FPV (First-Person View) drones that relied on real-time radio control and live video feeds.Using RF sensors, it is possible to detect the communication link between a drone and its operator, allowing triangulation and pinpointing of the operator's location. The control link can also be jammed or spoofed using electronic warfare (EW) systems.
FPV drone operators face significant danger because they must remain relatively close to the front line to maintain a strong signal. This exposes them to artillery fire, snipers, counter-drone attacks, and detection through radio-frequency triangulation.
Russian forces exploit this vulnerability by pairing Geran-2 drones. If an FPV interceptor is launched against one Geran-2, the second drone can use onboard sensors to locate the operator and attack immediately.
Ukraine's Sting Interceptor Drone
The most successful Ukrainian-developed interceptor drone currently in service is the Sting. The low-cost drone (approximately $2,000–2,100) uses a quadcopter architecture and features a 3D-printed aerodynamic airframe shaped like a bullet.
The Sting is capable of speeds of approximately 280–343 km/h. It is designed primarily as a kinetic interceptor, with the operator steering it directly into the target. Guidance is provided through day and thermal cameras, with possible sensor fusion from radar systems.
Ukraine began employing the Sting in combat during the spring of 2025, with widespread deployment by June 2025. The first publicly documented success occurred in April 2025 when footage of a Sting downing a Shahed-type drone went viral.
Perhaps the most remarkable feature of the Sting is its ability to be operated remotely from hundreds or even thousands of kilometres away.
Like other FPV drones, the Sting maintains a line-of-sight link to a forward control station. However, this forward station functions primarily as a relay node, connecting the drone to its pilot via Starlink's low-latency internet network. As a result, the pilot can be located virtually anywhere in the world.
Ukrainian operators typically control the drone from hardened shelters. The architecture also allows Sting drones to be launched from unmanned surface vessels (USVs).
Autonomous Interceptor Drones
The next generation of interceptor drones is being designed to operate autonomously using AI-powered machine vision, both during the day and at night.
These drones can independently detect, track, and engage targets without continuous human involvement. As a result, they do not require a vulnerable control channel that can be jammed or spoofed.
In effect, they are launch-and-scoot weapons that remove the operator from the battlefield and significantly reduce operational risk.
Russian Yolka Drone
Russian forces began operational deployment of the autonomous Yolka interceptor drone in early 2026.
The Yolka can be hand-launched, enabling widespread and highly distributed deployment. Once launched in the direction of a target, it operates autonomously.
Weighing approximately 1.3 kg, the Yolka is also based on a quadcopter architecture similar to the Sting. It can reach speeds of 200–250 km/h and operate at altitudes of up to 2 km.
Yolka vs Sting
The Yolka is significantly lighter and cheaper than the Sting, with an estimated cost of roughly $500 compared to the Sting's $2,000-plus price tag.
However, these savings come with trade-offs. The Yolka's range is limited to approximately 2.5–4 km, compared with the Sting's estimated 25–37 km range. It is also slower than its Ukrainian counterpart.
Merops AS-3 Surveyor
In addition to the Sting, Ukrainian forces are employing the American-made Merops AS-3 Surveyor, a sophisticated but significantly more expensive interceptor system.
Unlike the Sting and Yolka, the AS-3 requires catapult launch, reducing deployment flexibility. However, its conventional fixed-wing airframe enables much higher aerodynamic efficiency and speed.
The truck-portable counter-drone system consists of:
* Radar and electro-optical sensors for target detection and tracking * A command-and-control station * Pneumatic or mobile launch platforms * A fleet of Surveyor interceptor drones
The AS-3 derives its effectiveness from a combination of AI-enabled autonomy, high speed, and resistance to jamming.
After launch, the drone is initially guided using the sensors of the Merops system. During the terminal phase, it relies on onboard infrared and RF sensors combined with AI-powered machine vision.
The drone can continue homing in on its target even when satellite navigation and communication signals are jammed.
AI-powered machine vision, combined with the fusion of infrared and RF sensor inputs, is central to the Surveyor's effectiveness.
With a maximum speed of approximately 280 km/h, the AS-3 is capable of overtaking Russian Geran drones.
The current unit cost is estimated at around $15,000, although this is expected to fall below $10,000 as production scales.
Quadcopter vs Fixed-Wing Interceptors
The Sting and Yolka are quadcopter drones. They are simpler and cheaper to manufacture but are aerodynamically less efficient because they lack wings to generate lift and glide efficiently through the air.
Consequently, quadcopters are not optimised for sustained high-speed flight.
To intercept faster fixed-wing drones, quadcopter interceptors often position themselves above the incoming target. At the appropriate moment, they dive, converting altitude into speed and enabling a successful interception.
Future Developments
Interceptor-drone development is currently focused on increasing speed through the adoption of fixed-wing designs such as the AS-3 Surveyor.
Reusability is another area receiving considerable attention.
Fixed-wing drones can achieve higher speeds in level flight and generally manoeuvre more efficiently during the terminal interception phase.
Russian forces have already begun mass deployment of fixed-wing interceptor drones, including a dedicated air-defence variant of the Molniya family known as the Molniya-PVO. The drone is reported to be capable of speeds between 220 and 330 km/h.
Like the Yolka, the Molniya can be hand-launched. Alternatively, it can be launched using a lightweight catapult.
Conclusion
Ukraine seized an early lead in interceptor-drone technology with the Sting. Russia has largely closed the gap with the rapidly evolving Yolka and is now introducing fixed-wing interceptors such as the Molniya-PVO.
One important point stands out. Starlink has given Ukrainian forces a low-latency communications advantage that Russia is unlikely to match for several years.
There is another lesson for Indian defence planners. Rapid advances in drone autonomy are being driven by access to high-performance AI semiconductors and resilient communications networks.
India remains a long way from sovereign access to either low-latency broadband networks comparable to Starlink or the cutting-edge AI chips needed to support the next generation of autonomous combat systems.
Copyright © Vijainder K Thakur. First published on Thumkar.
