Owning the denied sky

Vision-based positioning for drones that reads the terrain when GNSS goes dark.

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Trusted in the field

INRIA Startup Studio

Incubation

French Army Regiments

Flight trials

Mission

43.6150° N · 7.0717° E

When GNSS goes dark, flight must continue

Satellite positioning is the first thing to fail: jammed, spoofed, or simply gone. Every drone that depends on it fails with it.

KALGARD builds vision-based onboard positioning that reads the terrain beneath the aircraft and keeps a trusted position through the whole flight. No GNSS, no datalink.

A sovereign European system: engineered in France, free of foreign compute dependencies, running on open maps the operator owns.

Technology

GNSS-independent

MerlinSight

One onboard module, three capabilities. It sits on the aircraft, watches the terrain, and answers the questions GNSS no longer can.

  • Passive, no emission
  • Platform-agnostic
  • 266 g
MerlinSight onboard module

MS-1

Positioning

Where am I?

Continuous onboard position with periodic absolute correction: the downward camera view is matched against georeferenced terrain. GPS-like output to the flight controller, no autopilot modification.

MS-2

Targeting

Where is it?

Georeferenced designation of ground objectives directly from the aircraft’s view, without GNSS on the target or the platform.

MS-3

Mapping

What does the terrain look like now?

Georeferenced imagery and terrain products built in flight, independent of satellite positioning.

MerlinSight prototype, camera and compute
Prototype · optics & compute
Flight integration work in the KALGARD workshop
Flight integration · workshop
Concept visualization · MS-1 in action

Flight-proven over two terrains: 3.4 m mean position error semi-urban and 5.5 m in the mountains, at up to 70 km/h, measured in real flight with an army regiment observing.

Performance detail and integration data are shared with qualified partners.

Team

Jules Baldantoni

Founder · Aeronautical Engineer

Imperial College London

UAV systems and product. Bringing MerlinSight into operational flight.

Thibault Noël

Robotics Engineer · PhD

ISAE-SUPAERO

Autonomous navigation, onboard perception, resilient localization.