Laser velocity sensing for assured navigation in GNSS-denied operations

Chimera Land

Chimera Land is a non-contact Laser Velocity Sensor (LVS) designed to deliver uncompromised dead reckoning reliability for ground vehicles operating in GNSS-denied, jammed, or spoofed environments. Using infrared laser Doppler velocimetry, it measures true 3D body velocity and provides highly accurate motion updates directly to Advanced Navigation’s INS navigation filter, eliminating the scaling errors and slip effects associated with mechanical odometry. The result is stable, infrastructure-independent positioning without reliance on external signals.

When integrated with the Boreas D90 Inertial Navigation System, Chimera Land achieves ~0.05% of distance traveled (CEP50) across 1–100 km at average speeds ≥7 km/h, with a maximum 3D body-velocity scaling error of 200 ppm. Compatible with Boreas and Certus Evo INS platforms, it enhances long-duration dead reckoning performance in underground, defense, and other signal-compromised environments. Its rugged, non-contact architecture is engineered to withstand dust, vibration, and extreme temperature variation.

Highly accurate 3D body velocity

Infrared laser Doppler sensing enables precise measurement of full 3D vehicle motion, capturing dynamics such as vibration and wheel slip that affect navigation accuracy.

Extended dead reckoning performance

By supplying drift-resistant velocity updates to Advanced Navigation’s INS, Chimera Land significantly reduces inertial error growth over extended distances in environments where satellite navigation is unavailable or unreliable.

Ruggedized for harsh environments

Designed for defense and mining applications, the sensor maintains performance under dust exposure, sustained vibration, and wide thermal variation without mechanical wear components.

Applications:

• Tactical vehicles
• Underground localization and navigation
• Autonomous haulage
• High-precision machine guidance
• GNSS-denied operations