The next generation of fiber optic gyroscopes
Fiber optic gyroscopes have set a high standard for inertial navigation. Their performance and accuracy have been recognised for several decades, with each generation offering innovative improvements.
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 has evolved into DFOG. This third generation of FOG sets itself apart by being completely digital, providing higher performance and reliability while enabling a 40% reduction in size, weight, power and cost (SWaP-C).
How does DFOG work?
The innovations that make DFOG possible are three different, yet complimentary, technologies that have been developed to improve the capabilities of fiber optic gyroscopes.
1. Digital Modulation Techniques