Boreas D90

The World's First Fully Digital FOG

Boreas D90 is an ultra-high accuracy INS that provides position, velocity and orientation under the most demanding conditions. It combines cutting-edge closed-loop Digital Fibre Optic Gyroscope (DFOG) and closed-loop accelerometer technologies, with a dual antenna RTK GNSS receiver. These are coupled in a sophisticated fusion algorithm to deliver accurate and reliable navigation. The system features ultra-fast gyrocompassing, acquiring and maintaining an accurate heading under all conditions with no reliance on GNSS.


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Revolutionary DFOG Technology
Boreas takes Fibre Optic Gyroscope (FOG) technology into the next generation with new, patent pending Digital FOG (DFOG) technology, developed over 25 years with 2 research institutions. This revolutionary DFOG technology combines a specially designed closed loop optical coil with advanced spread spectrum digital modulation techniques that have never been used in a FOG before. The resulting DFOG offers dramatically improved accuracy, stability and reliability with significantly reduced size, weight, power and cost.
North Seeking
Ultra-Fast North Seeking
The superior accuracy of the DFOG technology enables Boreas D90 to rapidly determine its heading, without the need for GNSS or magnetometers. By sensing the Earth's rotation, Advanced Navigation's revolutionary north-seeking algorithm allows Boreas D90 to acquire an accurate heading within minutes of start up. This can be achieved in both static and dynamic conditions, as well as at high latitudes.

Advanced Algorithms
Boreas D90 contains Advanced Navigation's revolutionary sensor fusion algorithm. This algorithm is more intelligent than the typical extended Kalman filter and is able to extract significantly more information from the data by making use of human-inspired artificial intelligence. It was designed for control applications and has a high level of health monitoring and instability prevention to ensure stable and reliable data.
Reliable and Rugged
Boreas D90 has been designed from the ground up for reliability. Both the hardware and software are designed and tested to safety standards. The precision aluminium enclosure is waterproof and dustproof to the IP67 standard. The system is resilient to shock and vibration, allowing it to be used in the most extreme conditions. The hardware is protected from reverse polarity, overvoltage, surges, static and short circuits on all external interfaces. The GNSS contains RAIM, which excludes malfunctioning or tampered satellite signals.
Industry Leading SWaP-C
Based on ground-breaking DFOG technology, Boreas D90 is a complete GNSS/INS with a 40% reduction in size, weight, power and cost, when compared to competing systems of similar performance.
Extensive Protocols and Interfaces
Boreas D90 features multiple interfaces including Ethernet, CAN, RS232, RS422 and GPIOs. Boreas D90 supports all the industry standard protocols including NMEA, CANopen, NTP, PTP, as well as a wide variety of proprietary protocols. A rich, responsive embedded web interface provides full access to all of the device's internal functions and data. Internal storage allows for up to 1 year of data logging.


Marine Surveying
Boreas is ideal for hydrographic survey. The system is able to rapidly initialise its gyroscompass heading in both high seas or stationary conditions and without the need for GNSS. The ultra high accuracy roll, pitch, heading, position and heave allows for extremely accurate surveys at long ranges.
Antenna Targeting
In both stationary and moving antenna applications, Boreas's rapid north seeking ensures that high accuracy roll, pitch and heading is maintained for precision antenna targeting control. It offers very high uptime and continuously delivers reliable data, even through long term GNSS outages. Boreas's high accuracy orientation is not affected by either magnetic interference or GNSS interference/spoofing.
Land Surveying
Boreas's high accuracy roll, pitch and heading make it well suited for surveying applications. It supports RTK which allows it to provide dramatically enhanced positioning accuracy over standard GPS with positioning accuracy of 10mm. The system supports connection of a wheel speed sensor which allows it to continue surveys through tunnels and other areas where GPS signals are not available. It also supports output of RINEX raw satellite data for post processing.
Subsea Vehicle
Boreas is excellent for subsea vehicle navigation. The ultra fast north seeking allows the system to quickly achieve high accuracy heading without any reliance on GNSS signals and it is not subject to magnetic interference. Boreas supports integration with a wide range of DVLs, USBLs and Logs to allow for high accuracy positioning underwater over long distances.


Roll and Pitch Accuracy 0.005°
Heading Accuracy
(dual GNSS, 1m separation)
Heading Accuracy
(without GNSS)
0.01° secant latitude
Gyrocompass Alignment 2 minutes (typical)
10 minutes (maximum)
Accuracy with Odometer
(no GNSS)
0.01 % distance travelled
Horizontal Position Accuracy
(RTK or PPK)
0.008 m
Vertical Position Accuracy
(RTK or PPK)
0.01 m
Horizontal Position Accuracy
0.5 m
Vertical Position Accuracy
0.8 m
Velocity Accuracy 0.005 m/s
Heave Accuracy 2 % or 0.02 m
(whichever is greater)
Output Data Rate 1000 Hz
Sensor Accelerometers Gyroscopes Pressure
Range ±15 g ±490 °/s 10 to 130 kPa
Bias Instability 7 ug 0.001 °/hr 8 Pa
Initial Bias < 100 ug < 0.01 °/hr < 50 Pa
Initial Scaling Error 340 ppm 80 ppm -
Scale Factor Stability 100 ppm 10 ppm -
Non-linearity 150 ppm 10 ppm -
Cross-axis Alignment Error < 0.001 ° < 0.001 ° -
Noise Density < 30 ug/√Hz 0.06 °/hr/√Hz 0.4 Pa/√Hz
Random Walk 17 mm/s/√hr VRW 0.001 °/√h ARW
Bandwidth 300 Hz 400 Hz 50 Hz
Model Advanced Navigation Aries
Supported Navigation Systems GPS L1, L2
BeiDou B1, B2
Supported SBAS Systems WAAS
Update Rate Up to 20 Hz
Hot Start First Fix 2 s
Cold Start First Fix 30 s
Horizontal Position Accuracy 1.2 m
Horizontal Position Accuracy (with SBAS) 0.5 m
Horizontal Position Accuracy (with RTK) 0.01 m
Velocity Accuracy 0.05 m/s
Timing Accuracy 20 ns
Acceleration Limit 4 g
Operating Voltage 9 to 36 V
Input Protection -200 to 200 V
Power Consumption
12 W with GNSS
Hot Start Battery Capacity > 48 hrs
Hot Start Battery Charge Time 30 mins
Hot Start Battery Endurance > 10 years
Operating Temperature -40 °C to 65 °C
Environmental Protection IP67
MTBF > 70,000 hrs
Shock Limit 50 g 11 ms
Vibration 8g rms
(20-2000 Hz random)
Dimensions 160x140x115.5 mm
Weight 2.5 kg
Interfaces Ethernet
Speed 100Mbit
4800 to 4M baud serial
Protocol AN Packet Protocol
Peripheral Interface 2x GPIO
1x Auxiliary RS232
GPIO Level 5 V (RS232)
3.3 V
GPIO Functions 1PPS input / output
Air Data Input
NMEA input/output
Novatel GNSS input
Trimble GNSS input
AN Packet Protocol
CAN / CANopen
Event trigger


Download / Link
Boreas D90 Datasheet
Boreas D90 Reference Manual
Boreas D90 Reference Manual
Boreas 3D Model