Passive GPS-denied navigation payload.
Zero RF emissions. Day and night.
Plug into any USV via MAVLink.
Camera points at zenith. Grid search matches detected stars against the Hipparcos catalog to compute absolute yaw. Corrects IMU drift every 30 seconds.
6-aperture UV sensor array measures sky polarization pattern. Grid search finds heading that best explains all sensor readings. Continuous heading correction throughout daylight hours.
Native MAVLink output. Drop-in replacement for GPS input on any compatible flight controller.
Tested with ArduPilot firmware. Works with Cube Orange, Pixhawk and compatible autopilots.
Compatible with PX4 flight stack via MAVLink GPS injection interface.
Designed for fixed-wing platforms. Star tracker works best in stable loiter or cruise flight.
Ideal for unmanned surface vehicles over open ocean where map matching fails.
UART / I2C output available for custom platforms and embedded integration.
EKF fusion of IMU, sky polarization and star tracker.
Passive. No RF. No GPS dependency.