Marine Gyrocompass & Inertial Navigation Systems

UrsaNav and Kearfott Corporation have teamed together to design Marine Gyrocompass and Inertial Navigation Systems that utilize three-axis Monolithic Ring Laser Gyroscope (MRLG) technology to provide reliable, accurate heading and attitude reference sources for military and commercial shipboard applications. These systems are designed as affordable state-of-the-art, bolt-in-place functional replacements for legacy naval gyrocompasses and feature a standard NMEA 0183 shipboard interface, an integral battery system and charger, and optional remote control units.
 

UN-200™

The UN-200 was designed as a form, fit, and functional replacement for standard naval gyrocompasses such as the AN/WSN-2, MK19, MK27, or MK39. Legacy gyrocompasses are constructed with conventional spinning-mass, gimbal-servo “iron gyros”. Our replacement system incorporates a three-axis Monolithic Ring Laser Gyroscope (MRLG). The UN-200 requires much less power than the legacy equipment. The modern support electronics package includes the standard NMEA 0183 shipboard interface and features expansion capabilities for additional interfaces such as Ethernet and CANbus (NMEA 2000).

UN-239™

The UN-239 was designed as a form, fit, and functional replacement for small form-factor naval gyrocompasses. The original equipment gyrocompasses were constructed with conventional spinning-mass, gimbal-servo “iron gyros”. Our replacement system is built around a three-axis Monolithic Ring Laser Gyroscope (MRLG). The UN-239 requires much less power than the legacy equipment. The modern support electronics package includes the existing interfaces and features expansion capabilities for additional interfaces such as Ethernet, NMEA-0183, and CANbus (NMEA-2000).

UN-500™

The UN-500 was designed as a form, fit, and functional replacement for standard naval inertial navigation systems such as the AN/WSN-5. Legacy inertial navigation systems are constructed with conventional spinning-mass, gimbal-servo “iron gyros”. Our replacement system incorporates a three-axis Monolithic Ring Laser Gyroscope (MRLG). The UN-500 requires much less power than the legacy equipment. The modern support electronics package includes the standard NMEA 0183 shipboard interface and features expansion capabilities for additional interfaces such as Ethernet and CANbus (NMEA 2000).

UN-700™

The UN-700 was designed as a form, fit, and functional replacement for standard naval ring-laser gyroscope (RLG) inertial navigation systems such as the AN/WSN-7 or AN/WSN-7B. In place of the three separate laser modules used in conventional RLG-based navigation, the UN-700 has a core of three lasers fabricated within a single, precision-machined, tri-axial block of thermally-stable glass ceramic. This construction technique allows for rapid alignment, maintains the laser paths in fixed orientations throughout their operating lifetime, and achieves precision-grade inertial navigation performance without resorting to indexing. The UN-700 supports all data the interfaces of its predecessor and can be easily expanded to include emergent communications standards. These benefits result in lower life-cycle costs and improved operational efficiency.