Document:
Liocrebif's LKF-SX-N01-UW FOG Inertial Navigation System is a new-generation, pressure-resistant strapdown INS built on fiber optic gyroscope technology. Comprising a three-axis integrated FOG, three-axis accelerometers, and a dedicated computation unit, it autonomously measures the carrier's full 6-DOF motion.
By supporting tight integration with satellite navigation, Doppler velocity log, USBL, and other inertial units through advanced navigation algorithms, it outputs high-precision position, velocity, heading, attitude, angular rate, and heave data.
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Fiber Optic Gyroscope (FOG)
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| Bias Stability (room temp.) | ≤0.007°/h, 1σ |
| Scale Factor Nonlinearity | ≤50ppm, 1σ |
| Range | ±400°/s |
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Accelerometer
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| Bias Stability | ≤30μg, 1σ |
| Scale Factor Nonlinearity | ≤100ppm, 1σ |
| Range | ±8g |
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Navigation Accuracy
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| Positioning Accuracy (pure inertial) | ≤0.8nm/1h |
| Positioning Accuracy (GNSS integrated) | Better than the accuracy of the connected GNSS position information |
| Positioning Accuracy (DVL integrated) | 0.3% of distance traveled (CEP) |
| Velocity Accuracy | ≤0.05m/s (RMS) |
| Heading Accuracy (DVL/USBL/GNSS integrated) | ≤0.05°secφ (RMS) |
| Horizontal Attitude Accuracy (DVL/USBL/GNSS integrated) | ≤0.01° (RMS) |
| Heave Accuracy | 0.05 m or 0.05 H (whichever is larger; H denotes the amplitude of vertical heave) |
| Data Update Rate | 100Hz |
| Startup Time | ≤30 min (at sea) |
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External Interface
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| RS422 | 3 channels (expandable) |
| Network | 1 channel |
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Environmental Adaptability
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| Operating Temperature | -40°C to +60°C |
| Depth Rating | 2000 m/6000 m (customizable) |
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Physical Characteristics
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| Weight | (2000m) ≤18.0kg (6000m) ≤25.0kg |
| Dimensions (mm) | ≤Φ260mm * 280mm |
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Electrical Characteristics
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| Input Voltage | DC 24V (20-32 V) |
| Power Consumption | Less than 20 W |
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