Merak-120ST Three-Axis Fiber Optic Gyroscope | FOG Sensor for Vehicle, Aircraft, and Submersible Navigation
The Merak-120ST Fiber Optic Gyroscope (FOG) is a high-precision three-axis angular rate sensor based on the Sagnac optical effect, featuring all-digital closed-loop detection technology. Its system architecture includes one electronic processing unit and three sensing heads, optimized for navigation applications to enable rapid startup and reduced alignment time. Angular velocity data is provided in real-time via serial interface, ensuring accurate and reliable performance.
Applications:
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Guidance systems
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Aircraft and vehicle navigation
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Marine platforms and submersibles
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Rail inspection
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Industrial-grade inertial navigation and attitude reference systems
Key Features:
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High accuracy and stability with design flexibility
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All-solid-state construction for enhanced reliability
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Minimal startup time with digital output
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Low noise, power-efficient, and cost-effective operation
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Extended lifespan for long-term performance
| Series | FOG Series | |
| Type | Merak-120ST | |
| Performance | Dynamic Range | ≥±400°/s |
| Bias in-run | ＜1°/h | |
| Accuracy(100sec) | 0.003°/h~0.001°/h | |
| ARW(Angular random walk) | ＜0.0006°/√hr,1σ | |
| Vibration screening | 20~500Hz,3.2g | |
| Bandwidth | ＞200Hz | |
| Electrical Interface | Turn on time | 30s |
| Output signal format | RS-422 | |
| Built in self-test | -- | |
| Output signal update rate | 500Hz~4000Hz | |
| Output signal baud rate | 115200bps~921600bps | |
| Operating temperature | - 40℃ ~ + 70℃ | |
| Storage temperature | - 55℃ ~ + 85℃ | |
| Physical Specifications | Power supply | 5V |
| Connector (9 pins) | J30JZ/XN9TJCAL01 | |
| Power consumption | ≤4.5w | |
| MTBF (per MIL-HDBK-217-F) | ＞100000hr | |
| Weight | ≤1500g | |
| Dimensions | Φ117mm×24mm | |
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