Belarus Unveils Scanner 2.1 Acoustic Drone Detection System

Belarus has unveiled a new acoustic drone detection system called Scanner 2.1, developed by the Belarusian company InnoTech Solutions and presented at the State Authority for Military Industry on May 19, 2026, according to Belarusian state media reporting.

The system is designed specifically to detect drones that conventional radio-frequency monitoring cannot easily track, including the fiber-optic-controlled drones that have become a defining feature of the war in Ukraine.

Scanner 2.1 is the latest iteration of the ALS Scanner platform that InnoTech Solutions has been developing as a passive acoustic detection system for low-altitude unmanned aerial vehicles.

What the System Is Built to Do

The Scanner 2.1 is an acoustic locating system that listens for the sound signatures of drones rather than scanning for their radio emissions. That is the technical point of the platform.

Quadcopter-type unmanned aerial vehicles with electric motors, fixed-wing UAVs with internal combustion engines, and first-person-view drones each produce distinct acoustic profiles from their propellers and powerplants. The system uses signal processing to identify those profiles in ambient noise and report the direction the sound is coming from.

When integrated with components of the broader ALS Scanner complex, the platform can determine flight parameters including speed and heading for fixed-wing drones, according to the manufacturer.

The notification approach is meant for distributed deployment. Alerts are pushed to smartphones and smartwatches carried by personnel, allowing mobile teams to receive warnings without needing a fixed command post.

The Specifications

The Scanner 2.1 hardware itself is small. The device measures 23 centimeters (9 inches) in diameter, weighs 1.2 kilograms (2.6 pounds), and is designed to be deployed by a single operator on the ground in under two minutes.

A built-in power supply provides more than 12 hours of operating autonomy on a single charge, according to the manufacturer, which is the operational window needed for a sentry team running a perimeter for an overnight watch.

Stated detection ranges are 100 to 300 meters (328 to 984 feet) for first-person-view drones and 1,000 to 1,500 meters (3,280 to 4,921 feet) for fixed-wing drones with internal combustion engines, varying with the acoustic environment, according to the InnoTech Solutions announcement.

The system reportedly uses artificial intelligence algorithms to filter out extraneous noise and isolate drone acoustic signatures, though no independent technical evaluation of those algorithms has been published.

Why Acoustic Detection of Fiber-Optic Drones Matters

The reason Scanner 2.1 is positioned around fiber-optic drones is the war in Ukraine.

Fiber-optic drones use a thin physical cable that unspools as the drone flies, replacing the radio link that conventional first-person-view drones depend on for control and video feedback. Because there is no radio emission, electronic warfare systems that detect drones by their RF signature and that jam them by overpowering their control link simply do not work against a fiber-optic platform.

Both Russian and Ukrainian forces have fielded fiber-optic drones at scale over the past year, and the platforms have proven particularly difficult to counter in close-range strike missions.

That technical reality has driven a parallel push across multiple militaries to develop detection methods that do not depend on radio. Acoustic detection is one of the few practical approaches, alongside electro-optical and infrared sensors. A drone in flight makes noise, and if you can hear it, you can potentially detect it.

Whether Scanner 2.1 actually delivers the detection ranges claimed by InnoTech Solutions in real-world conditions, especially against the low acoustic signature of small electric quadcopters in noisy environments, is exactly what an independent technical evaluation would establish. None has been published.

The Geographic Context

Belarus shares borders with Ukraine, Poland, Lithuania, and Latvia. Three of those four are NATO members, and the fourth is a country at war with Belarus’s principal ally.

As SB.BY reported, any drone detection capability that Belarus fields has obvious application to its own border security posture, particularly given the frequency with which drones from the Russia-Ukraine conflict have strayed into the airspace of neighboring countries. The geographic logic of investing in counter-drone detection is straightforward, regardless of how one assesses the broader politics of the regime in Minsk.

The Belarusian Air Force and Air Defense Forces have received other counter-drone systems in recent months, including Tor missile systems acquired in 2025, according to BelTA reporting. Scanner 2.1 fits into that broader Belarusian effort to build a layered counter-UAS posture.

DroneXL’s Take

Here’s the catch: this story is real and the technical problem it addresses is one of the most important in counter-drone defense today. Fiber-optic drones broke the radio-detection model, and acoustic detection is one of the legitimate responses being pursued by multiple militaries.

But every fact in this announcement traces back to either the developer or Belarusian state-controlled media. There is no independent test, no third-party benchmark, and no published evaluation of how Scanner 2.1 actually performs against the small electric quadcopters that make up the bulk of the fiber-optic drone threat.

That gap matters because acoustic detection at the ranges claimed for small electric drones is genuinely hard. Quadcopter rotor noise drops off fast with distance, ambient noise in any operational environment is high, and 100-to-300-meter detection for a small FPV drone is at the edge of what published peer-reviewed acoustic detection research has demonstrated.

The system may work as advertised. It may also be a press release that overstates a real but more limited capability. Without independent testing, neither claim can be settled, and serious readers should treat the specifications as manufacturer-stated rather than verified.

The broader signal worth taking from the announcement is that the counter-drone arms race has moved into the acoustic domain, and that the militaries that figure out reliable acoustic detection of fiber-optic drones first will have a real advantage in the next phase of unmanned warfare.

Photo credit: Belarus Ministry of Defense