New A Series Expands Advanced Navigation’s DFOG Range - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

New A Series Expands Advanced Navigation’s DFOG Range

SYNDEY, Australia—Advanced Navigation, an innovator in artificial intelligence for robotic and navigation technologies, has announced the expansion of its revolutionary Boreas digital fiber-optic gyroscope (DFOG) range with its new A Series.

The Boreas A90 and A70 are strategic-grade inertial measurement units (IMU) that deliver acceleration and orientation with superior accuracy, stability and reliability under all conditions with no reliance on GNSS. They also feature automatic gyrocompassing with industry-leading reductions in size, weight, power and cost (SWaP-C) compared to competing systems on the market, the company said.

“Our world-first Boreas DFOG technology represented a step-change for fiber-optic gyroscopes. The addition of the A Series ensures we have greater ability to meet the rapidly growing demand for ultra-high accuracy solutions, even in the most demanding conditions,” said Xavier Orr, CEO and cofounder of Advanced Navigation.

“The A Series is an embodiment of industry-leading performance and cost-effectiveness. We look forward to seeing this technology unlock new possibilities across an expanse of fields, from autonomous vehicles and land surveying to subsea navigation and mining.”

The Boreas A90 and A70 are IMUs that contain ultra-high accuracy DFOG and high-performance closed-loop accelerometers. Boreas A90 offers ultra-high performance, while the A70 offers high performance. Featuring ultra-fast gyrocompassing, both systems can acquire and maintain an accurate heading under all conditions with no reliance on GNSS, making them well-suited for surveying, mapping and navigation across subsea, marine, land and air applications.

The Boreas A90 and A70 also offer an optional license to add INS capabilities and enable integration with external GNSS receivers using Advanced Navigation’s comprehensive range of interfaces and communication protocols.

The Boreas range is targeted at applications requiring always available, ultra-high accuracy orientation and navigation scenarios including marine, surveying, subsea, aerospace, robotics and space.
DFOG is Advanced Navigation’s patented technology, developed over 25 years involving two research institutions. DFOG was created to meet the demand for smaller and more cost-effective FOGs, while increasing reliability and accuracy.

The first generation of FOG made available in 1976 used analog signals and analog signal processing. The second generation was developed in 1994 and is still used to this day. It improved upon the first generation with a hybrid approach using an analog signal in the coil with digital signal processing.
In 2021, FOG evolved into DFOG. This third generation of FOG sets itself apart by being completely digital, providing higher performance and reliability while enabling up to 40% reductions in SWaP-C.

To achieve this, three different, yet complementary, technologies have been developed to improve the capabilities of FOG: Digital modulation techniques, which allows in-run variable errors in the coil to be measured and removed from the measurements; a revolutionary optical chip that integrates five sensitive components into a single chip and removing all the fiber splices; and a specially designed optical coil developed to take full advantage of the digital modulation techniques.

Prof. Arnan Mitchell, director of the Integrated Photonics and Applications Centre at Royal Melbourne Institute of Technology (RMIT University), was a key partner in developing DFOG technology with Advanced Navigation. He is a noted authority on microtechnology and nanotechnology whose work on shrinking the components of a fiber-optic gyroscope onto a single chip proved to be one of the key aspects of DFOG’s revolutionary technology. This innovation allows DFOG to have a significantly lower SWaP-C than other similar FOGs, all the while delivering higher accuracy and reliability.

“By printing optical components onto a tiny chip, we are creating more compact and reliable fiber-optic gyroscopes with Advanced Navigation,” Mitchell said.