Dubhe-M4 Laser Gyro Quartz Accelerometer Inertial Navigation System | GNSS-Aided Maritime RLG INS
The Dubhe-M4 Laser Gyro Inertial Navigation System (INS) delivers high-precision navigation for a wide range of maritime vessels. Utilizing laser gyroscopes and quartz accelerometers as core sensors, this strapdown INS provides real-time navigation information through advanced onboard navigation software.
The system supports multiple operation modes, including inertial-only navigation and GNSS-assisted navigation, offering comprehensive navigational data for various vessel platforms. The Dubhe-M4 accurately provides heading, roll, pitch, speed, and position information, meeting the operational demands of modern maritime applications.
Applications:
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Maritime vessels
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Ship platforms requiring high-precision navigation
Key Features and Capabilities:
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Real-time navigation computation for precise vessel positioning
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Inertial-only and GNSS-assisted operation modes for versatile navigation
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Accurate heading, roll, and pitch information
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Speed and position data for comprehensive maritime navigation
Keywords: Laser gyro INS, quartz accelerometer navigation system, GNSS-aided INS, maritime inertial navigation, RLG INS, real-time navigation system, ship navigation INS
| Series | MaritimeInertial Navigation System(INS-M) | |
| Type | Dubhe-M4 | |
| Accelerometer | Months Bias Repeatability(1σ) | ≤30μg |
| Months Scale Factor Accuracy(1σ) | ≤30ppm | |
| Gyro | Bias Repeatability(1σ) | ≤0.003°/hr |
| Scale Factor Accuracy(1σ) | ≤3ppm | |
| Random walk(1σ) | ≤0.001°/√hr | |
| Features | Angular Rate | ≥±400°/sec |
| Angular Acceleration | 100000°/sec2 | |
| Acceleration | ＞25g | |
| Angular Attitude | Any Orientation | |
| Speed accuracy/Pure inertia | ≤1.0kn,RMS | |
| Speed accuracy/INS/GNSS Combination | ≤0.4kn,RMS | |
| Startup time | ≤10sec | |
| Input/output | 3 RS422 full-duplex serial ports, 1 100M Ethernet port | |
| Alignment time | ≤15min | |
| Position accuracy | Pure inertia | ≤1nm/4h,CEP |
| INS/DVL Combination | ≤0.3%D,RMS | |
| INS/GNSS Combination | better than GNSS | |
| Heading Accuracy | Pure inertia | ≤0.02°sec(L),RMS |
| INS/GNSS Combination | ≤0.01°,RMS | |
| Pitch & Roll Accuracy | Pure inertia | ≤0.01°,RMS |
| INS/GNSS Combination | ≤0.01°,RMS | |
| Characteristics | Power consumption | ＜30W |
| Dimensions(Lmm×Wmm×Hmm) | 232×186×160mm | |
| Weight | ＜8kg | |
| Temperature | -40℃~60℃ | |
| Shock | 15g,Half-sine wave 11ms | |
| Input Voltage | DC24V(±25%) | |
| cooling | Conduction to mounting plate | |
| Vibration | 20~2000Hz,6.06g | |
| MTBF | ＞20000 hours | |
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