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1. Structure Composition
The fiber optic gyro core sensor is the core component of the fiber
optic gyroscope, responsible for measuring the angular velocity
based on the Sagnac effect; the signal processing and control
module modulates, demodulates, amplifies and digitizes the optical
signals and outputs high-precision angular velocity data.
2. Future Development Trends
With the rapid development of automatic driving, intelligent
navigation, high-precision positioning and other technologies, the
demand for high-precision inertial sensors continues to grow. In
the future, the three-axis integrated fiber optic gyroscope will
develop in the direction of more miniaturization, lower power
consumption, higher precision, lower cost, and integrate with GNSS,
MEMS sensors, etc., to improve the overall navigation performance.
3. Parameters
| Serial number | Test item | Unit | Technical requirements |
| 1 | Start-up time | s | 3 |
| 2 | Zero bias | (°)/h | ≤0.5 |
| 3 | Zero bias stability at room temperature (constant temperature) | (°)/h | ≤ 0.02 (10 s smoothing) ≤ 0.008 (100s smoothing) |
| 4 | Zero bias stability with temperature change (1 ℃/min variable temperature, 100 s smooth) | (°)/h | ≤0.02 |
| 5 | Zero-bias repeatability | (°)/h | ≤0.008 |
| 6 | Zero bias sensitivity | (°)/h/Gs | ≤0.01 |
| 7 | Random walk coefficient | (º)/h1/2 | ≤0.001 |
| 8 | Scale factor nonlinearity | ppm | ≤5 |
| 9 | Scale factor asymmetry | ppm | ≤2 |
| 10 | Scale factor repeatability | ppm | ≤5 |
| 11 | Threshold | (°)/h | ≤0.01 |
| 12 | Resolution | (°)/h | ≤0.01 |
| 13 | Bandwidth | Hz | ≥200 |
| 14 | Operating temperature | ℃ | -45～+70 |
| 15 | Storage temperature | ℃ | -55～+85 |
| 16 | Dynamic range | (°)/s | ±300 |
| 17 | Supply voltage | V | +5 |
| 18 | Normal temperature steady state power consumption | W | ≤4.5 |
| 19 | Full temperature steady state power consumption | W | ≤8 |
| 20 | Start the instantaneous current | A | <2 |
