1. Product Overview
The 3-axis integrated Fiber Optic Gyroscope (FOG, Fiber Optic
Gyroscope) is a high precision angular velocity sensor based on the
principle of optical interference. It detects angular velocity by
measuring the Sagnac effect generated when light propagates along
the fiber optic ring and outputs precise attitude information.
Compared to traditional mechanical gyroscopes, the FOG has the
advantages of being frictionless, long-life, high-precision and
shock-resistant, making it a core component in modern inertial
navigation and attitude measurement systems.
The integrated three-axis design means that the gyroscope can
measure the angular velocity in X, Y, and Z directions
simultaneously, simplifying system integration and improving
attitude measurement accuracy, which is widely used in aerospace,
navigation, robotics, precision measurement, and other fields.
2. 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.
3. Parameters
| Serial number | Test item | Unit | Technical requirements |
| 1 | Start-up time | s | 3 |
| 2 | Zero position | (°)/h | ≤0.3 |
| 3 | Zero bias stability at room temperature (constant temperature) | (°)/h | ≤ 0.006 (10s smoothing) ≤ 0.002 (100s smoothing) |
| 4 | Zero bias stability with temperature change (1 ℃/min variable temperature, 100 s smooth) | (°)/h | ≤0.008 |
| 5 | Zero-bias repeatability | (°)/h | ≤0.002 |
| 6 | Zero bias sensitivity | (°)/h/Gs | ≤0.003 |
| 7 | Random walk coefficient | (º)/h1/2 | ≤0.0002 |
| 8 | Scale factor nonlinearity | ppm | ≤5 |
| 9 | Scale factor asymmetry | ppm | ≤2 |
| 10 | Scale factor repeatability | ppm | ≤5 |
| 11 | Threshold | (°)/h | ≤0.002 |
| 12 | Resolution | (°)/h | ≤0.002 |
| 13 | Bandwidth | Hz | ≥200 |
| 14 | Operating temperature | ℃ | -45～+70 |
| 15 | Storage temperature | ℃ | -55～+80 |
| 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 |
4. Production environments
