Naval System

The performance of a fiber-optic gyroscope can be changed by altering the length and diameter of its coil, making it adaptable to a wide range of performance needs. Performance can further be increased by pushing back the technological limits of the optical components that are used within the FOG gyroscope.

Because Exail has complete mastery over all the components that are integrated into its systems, from its own optical fiber and components, to its accelerometers and algorithms, the company can push the limits of the FOG technology to have it reach new peaks of performance.

The FOG (Fiber-Optic Gyroscope) is the result of more than 30 years of research and development and is today considered to be the best gyroscope in the world: its performance is deemed genuinely unlimited.

Based on the Sagnac effect, FOGs are passive systems that use light to calculate motion. Rotations movements are measured by sending identical laser beams, in opposite directions, through a long fiber-optic coil.The laser beam travelling against the direction of rotation experiences a slightly shorter path delay than the other beam. Measuring the phase shift between the two beams reveals changes in orientation. Objects being free to rotate in three dimensions, Fiber-optic based inertial navigation systems contains three FOG gyroscopes, measuring rotations on those three different axes.

Fiber-Optic Gyroscopes are truly solid-state passive systems. Indeed, the FOG technology does not involve any movement of mechanical parts causing dithers, vibrations, frictions and resulting in parts’ weariness and noise. This ensures many benefits for the user: acoustic stealth, robustness of the system (Power-on and Forget), cost-effectiveness and the lowest cost-of-ownership on the market.

Operating as a single component and relying only on light motion, FOGs are resistant to external disruptions such as shocks, extreme temperatures, magnetism or vibrations. This is why FOGs equipped system are operating in extreme environments such as salellires, strategic submarines, long range artillery, extreme deep-water robots and vehicles.

Quadrans are fully strap-down Fiber-Optic Gyrocompass (FOG) and attitude reference system.

IMO and IMO-HSC certified, they provide all the necessary data for demanding navigation and control applications at a fast rate and with precise time-stamping.

Thanks to their low weight and small size, their low power consumption and their Ethernet/serial connectivity, they can be integrated with ease on any platform.

Based on state-of-the-art Fiber-Optic Gyroscope technology, Quadrans and Octans answers to a full range of navigation needs, without any compromise on performance and without requiring any maintenance during its service life.