ANELLO Photonics details how its Maritime INS enables resilient navigation in GPS-denied maritime environments through the integration of Silicon Photonics Optical Gyroscope (SiPhOG™) technology and tightly coupled sensor fusion. Read more >>
Designed for defense, commercial, and research operations, the system supports reliable positioning and navigation during GNSS disruption caused by jamming, spoofing, multipath effects, or signal loss. The Maritime INS has been tested across multiple real-world scenarios, maintaining stable inertial navigation under degraded or unavailable GPS conditions.
ANELLO Maritime INS
The ANELLO Maritime INS combines SiPhOG™ optical gyroscopes with a multi-sensor fusion architecture to reduce navigation drift and maintain accurate state estimation. The system features gyro bias instability below 0.5°/hr, angular random walk below 0.05 °/rt(hr), and a triple-redundant IMU configuration for fault tolerance and noise averaging.
An Extended Kalman Filter (EKF) continuously estimates position, velocity, and orientation while integrating aiding inputs such as Doppler Velocity Logs (DVLs), speed-through-water sensors, GNSS, vision-based navigation, celestial navigation, and M-Code GNSS where available.
Navigation Accuracy & Operational Performance
To further improve long-duration navigation accuracy, the Maritime INS incorporates environmental modeling and machine learning augmentation to estimate ocean current vectors and separate true vessel motion from motion measured by speed sensors due to water currents. This approach improves observability, reduces long-term position error accumulation, and supports stable operation during sensor dropouts and dynamic maritime conditions including heavy currents, vibration, and shock.
Field deployments demonstrated stable inertial navigation during GNSS outages and spoofing scenarios, including a 30-minute GPS-denied USV deployment that achieved 1.3% total drift. Additional testing conducted in the Gulf of Aqaba, Jordan, demonstrated the system maintaining stable navigation performance during GPS spoofing and signal degradation.
By combining low-drift silicon photonics sensing, real-time bias estimation, and multi-sensor velocity aiding, the ANELLO Maritime INS supports extended autonomous operation in GPS-denied environments.
Read ‘RESILIENT MARITIME NAVIGATION IN GPS-DENIED ENVIRONMENTS’ for more information.
