GNSS Compass from Advanced Navigation combines satellite positioning, inertial navigation, and dual-antenna heading in a single system for marine navigation and hydrographic operations. Its GPS-derived heading avoids susceptibility to magnetic interference, while integrated inertial sensing enables accurate heading to be maintained through GNSS outages lasting up to 20 minutes. The unit delivers 0.2° heading accuracy, 0.4° roll and pitch accuracy, and centimeter-level RTK positioning, with horizontal RTK accuracy reaching 0.01 m.
Support for GPS, GLONASS, Galileo, and BeiDou provides multi-constellation satellite coverage, while navigation data can be output at rates up to 200 Hz. GNSS Compass integrates through NMEA 0183, NMEA 2000, Ethernet, CAN bus, RS422, or RS232, depending on hardware configuration, and supports protocols used by hydrographic systems. An IP67 enclosure, -40 °C to 85 °C operating range, and integrated heave measurement provide a compact navigation and heading solution suited to demanding marine environments.
| Horizontal position accuracy: | 1.5 m |
| Vertical position accuracy: | 2.0 m |
| Horizontal RTK position accuracy: | 0.01 m |
| Vertical RTK position accuracy: | 0.015 m |
| Velocity accuracy: | 0.05 m/s |
| Heading accuracy: | 0.2° |
| Roll and pitch accuracy: | 0.4° |
| Heave accuracy: | 5% or 0.05 m, whichever is greater |
| Navigation range: | Unlimited |
| Hot-start orientation time: | 500 ms |
| Output data rate: | Up to 200 Hz |
| Supported GNSS constellations: | GPS L1/L2, GLONASS G1/G2, Galileo E1/E5b, and BeiDou B1/B2 |
| Acceleration limit: | 4 g |
| Hot-start first fix: | 6 s |
| Cold-start first fix: | 30 s |
| Heading fix after valid position: | 10 s |
| Ethernet interface: | 10/100 Ethernet |
| Ethernet protocols: | NMEA 0183, AN Packet Protocol, TSS1, Simrad, and RTCM |
| Ethernet ports: | Up to 4 TCP or UDP ports |
| Ethernet timing: | PTP Server and NTP Server |
| PTP timing accuracy: | 50 ns |
| NTP timing accuracy: | 1 ms |
| Serial interfaces: | RS422 or RS232, plus CAN bus |
| Serial speed: | 2400 to 1M baud |
| Serial protocols: | NMEA 0183, NMEA 2000, AN Packet Protocol, TSS1, Simrad, and RTCM |
| Serial timing: | 1PPS output |
| 1PPS timing accuracy: | 20 ns |
| Ethernet power input: | Power over Ethernet, 802.3af or 802.3at |
| Ethernet power consumption: | 1.3 W |
| Serial operating voltage: | 9 to 36 V |
| Serial power consumption: | 1.4 W |
| Operating temperature: | -40 °C to 85 °C |
| Environmental protection: | IP67 |
| Shock limit: | 75 g, 11 ms |
| Dimensions: | 672 × 190 × 73.9 mm |
| Weight: | 1450 g |
