Passive low-airspace sensing
Making the low skies visible.
Fravek is developing passive radar that uses signals already in the air to detect and track low-flying drones—without transmitting a radar signal.
The need
Earlier warning. More time to act.
Drone threats can approach beyond the reach of perimeter security. We’re developing an additional layer of awareness to help operators see what’s approaching and prepare a response.
The approach
Existing signals. Connected nodes. One air picture.
Our approach uses reflections from existing radio signals to detect drones. Software is being developed to classify detections, combine information across nodes and deliver useful tracks to operational systems.
No radar transmission
Receive existing signals without transmitting a radar signal.
Distributed coverage
Add sensing nodes around the locations that need visibility.
Connected operations
Designed to cue other sensors and integrate with command-and-control systems.
Technical architecture and evaluation details are available to relevant organisations on request.
The applications
One sensing approach, two routes to use.
Critical infrastructure
Drone detection through your security partner.
We’re developing a detection service for airports, energy sites, ports, water utilities and data centres, delivered through security integrators and connected to existing security operations.
- · No radar transmission, so nodes can sit beside a runway or on a city rooftop
- · Wide-area awareness that cues cameras and other sensors already installed
- · Delivered through the security partners you already work with
Defence
Passive sensing for operational environments.
We’re developing the same sensing approach for defence applications, with field evaluation planned to assess performance against operational requirements.
- · No radar transmission from the node itself
- · Designed to be carried and emplaced by a small crew
- · Evaluation planned with operational users
Development progress
From development to field evidence.
Our next milestone is measured performance in Ukraine and at Swedish pilot sites, targeted for Q4 2026.
Help shape your site’s drone detection.
We’re looking for infrastructure operators, security integrators and defence partners to help shape and evaluate Fravek.
Discuss a pilot or partnershipMaking the low skies visible.