Monava Raises €500K for Passive Acoustic AI Drone Detection That Radar Cannot Jam

Because the technology relies on a physical signature every drone produces — the sound of its rotors — it works on any drone regardless of its communication link. Fibre-optic-guided and GPS-dark drones that defeat RF detection are still audible . The system also works in zero-visibility conditions: fog, smoke, darkness, and behind buildings or terrain where cameras and radar struggle .

Originally developed for avalanche detection and later adapted for military use, Monava’s sensors can detect drones in the air, on land, and on water .

Advantage Over Traditional Sensors

Traditional counter-drone systems suffer from three fundamental weaknesses that Monava addresses:

• Radar emits detectable radio waves — an adversary can jam them or use them to locate the sensor. It also struggles with low-flying, small, or slow-moving drones in cluttered terrain .
• Radio-frequency (RF) scanners only detect drones that are actively transmitting. Autonomous or fibre-guided drones are invisible to them .
• Electro-optical/infrared cameras fail in fog, smoke, and darkness .

Monava’s passive acoustic approach has none of those constraints. It cannot be jammed because it produces no signal to jam. It cannot be detected because it emits nothing. And it works on any drone that makes noise — which is, at present, practically every drone .

As one analysis put it, “Monava’s technical logic rests on a physical fact: regardless of the communication method a drone uses, whether it flies autonomously or not, its propellers still produce sound” .

Current Deployments

Monava’s sensor systems are already operational across the Nordics and in Ukraine, deployed with armed forces in both regions . The systems are being used for military and critical-infrastructure protection, providing an additional, undetectable detection layer in environments where traditional sensors fall short.

The company is now transitioning from limited deployments toward mass production and commercial scaling to meet what it describes as rapidly growing demand from European defence customers .

Investor Rationale: Why the Drone Threat Matters Now

Gungnir Capital’s managing partner Max Villman, who joined Monava’s board as part of the deal, described the company as “exactly the type of company we should back” . The broader investment thesis shared across multiple reports is that small, inexpensive drones have become one of the most pressing battlefield threats of the current era .

“The war in Ukraine has demonstrated that inexpensive drones can defeat multi-million-dollar air defense systems, creating surging demand for alternative detection methods,” noted one industry analysis . The global counter-drone market urgently needs passive, jam-resistant detection layers, and Monava’s system fits directly into that gap .

What the New Capital Will Be Used For

Monava will use the fresh capital to:

• Commercialise its passive acoustic detection product
• Ramp up mass production capacity
• Scale the organisation and recruit talent
• Expand operations to serve growing demand from European defence customers

The company, founded by Alexander Hebbe, Alexander Faraj, and Ilkka O. Lavas , represents a small but strategic bet on a technology that works precisely where radar and RF fail — and that cannot be silenced by an adversary’s countermeasures.