The fiber-optic inertial navigation system (FOG-INS) uses a fiber-optic gyro (FOG) and a quartz accelerometer as its core inertial sensors. Its high navigation accuracy comes from a strapdown architecture, combined with a real-time navigation computation engine that outputs continuous navigation data.

The system supports multiple operation modes, including pure inertial mode, GNSS/INS integrated mode, and autonomous inertial navigation. It provides reliable and high-accuracy navigation data such as heading, roll, pitch, velocity, and position for maritime platforms.

By integrating Kalman filtering, strapdown algorithms, and GNSS aiding, the FOG-INS meets the demands of a wide range of vessel types—such as cargo ships, offshore vessels, patrol craft, naval platforms, USVs, and research vessels.

This product category is widely used for maritime gyrocompass replacement, platform stabilization, autopilot input, and positioning augmentation, offering superior long-term reliability, drift performance, and environmental robustness.