Uncrewed Systems

High performance INS for autonomous systems

A rugged dual-antenna INS that gives uncrewed ground and surface vehicles accurate heading from the outset, and keeps navigating when GNSS is lost.

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The challenge

An autonomous vehicle needs reliable heading when it stands still as well as when it moves, without leaning on a magnetometer.

It also has to keep navigating when GNSS is lost, or when someone tries to jam or spoof it.

For robotics, autonomous mobility and surveying from unmanned vehicles, it needs centimetre-level position too.

How we solve it

Octantis 3 is a third-generation, rugged, dual-antenna GNSS-aided MEMS inertial navigation system, used on UGVs for navigation. Its dual-antenna GNSS compassing gives accurate heading from the outset, and Aeron's NavPro engine fuses it with Aeron's own IMU in a multi-modal Kalman filter.

Heading at standstill
Dual-antenna compassing gives heading in static and dynamic conditions: 0.1° (1σ) with the antennas 1 m apart, 0.02° at 5 m.
Holds position without GNSS
With speed aiding, position drift stays under 1% of distance travelled when GNSS is denied. Its tactical MEMS IMU has 0.8°/hr gyro bias instability.
Centimetre-level with RTK
0.8 cm CEP horizontal and under 2 cm vertical with RTK.
Resists jamming and spoofing
A multi-frequency (L1, L2, L5), multi-constellation receiver including NavIC, with receiver-level safeguards against intentional jamming and spoofing.
Talks to the vehicle
Isolated RS232, RS422, Ethernet and CAN, with 1PPS time sync. NMEA, binary or J1939 output at 200 Hz navigation and 500 Hz IMU data, and inputs for speed, velocity, position, altitude, heading and magnetometer aiding.