The ER-FNS-03 Low Cost 3 Axis FOG North Seeker utilizes closed-loop fiber optic gyroscope technology as its core component. This system integrates an inertial measurement unit (IMU), digital signal processing unit, and mechanical components to provide accurate true north azimuth angle data for carriers.
| Parameter | ER-FNS-03A | ER-FNS-03B |
|---|---|---|
| North seeking precision (1σ) | 1 secψ | 0.5 secψ |
| Working latitude | 65°N~65°S | |
| Attitude accuracy (1σ) | 0.1° | |
| Holding | 20min | |
| Heading measurement range | 0°~360° | |
| Roll pitch measurement range | -65°~65° | |
| North seeking time | 3min | |
| North seeking method | Static | |
| Update rate | 20 Hz | |