Dubhe-M1 RS422 Strapdown RLG Submarine Inertial Navigation System | GNSS-Aided Maritime INS
The Dubhe-M1 Submarine Inertial Navigation System (INS) is designed to meet the demands of maritime and submarine navigation. Integrating precision RLG/FOG gyroscopes with quartz accelerometers in a robust strapdown sensor assembly, the system provides high-accuracy, real-time navigation data.
Equipped with a high-speed processing unit, the Dubhe-M1 supports multiple operation modes, including pure inertial navigation and GNSS/velocity hybrid navigation, ensuring continuous and reliable positioning information for a variety of marine platforms.
Applications:
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Submarines and underwater vessels
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Maritime vessels requiring precise navigation
Key Features and Capabilities:
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Real-time strapdown computation for accurate navigation
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Pure inertial and GNSS/velocity hybrid operation modes
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Reliable continuous positioning for diverse marine platforms
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High-precision heading, roll, pitch, speed, and position information
Keywords: Submarine INS, RS422 strapdown INS, maritime RLG INS, GNSS-aided marine navigation, optical strapdown INS, high-accuracy marine INS, FOG gyroscope navigation
| Series | Maritime Inertial Navigation System(INS-M) | |
| Type | Dubhe-M1 | |
| Accelerometer | Months Bias Repeatability(1σ) | ≤30μg |
| Months Scale Factor Accuracy(1σ) | ≤30ppm | |
| Gyro | Bias Repeatability(1σ) | ≤0.01°/hr |
| Scale Factor Accuracy(1σ) | ≤10ppm | |
| Random walk(1σ) | ≤0.003°/√hr | |
| Features | Angular Rate | ≥±400°/sec |
| Angular Acceleration | 100000°/sec2 | |
| Acceleration | ＞25g | |
| Angular Attitude | Any Orientation | |
| Speed accuracy/Pure inertia | ≤1.5kn,RMS | |
| Speed accuracy/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/1h,CEP |
| INS/DVL Combination | ≤0.3%D,RMS | |
| INS/GNSS Combination | better than GNSS | |
| Heading Accuracy | Pure inertia | ≤0.05°sec(L),RMS |
| Inertia/GNSS Combination | ≤0.02°,RMS | |
| Pitch & Roll Accuracy | Pure inertia | ≤0.02°,RMS |
| Inertia/GNSS Combination | ≤0.01°,RMS | |
| Characteristics | Power consumption | ＜20W |
| Dimensions(Lmm×Wmm×Hmm) | 195×160×108mm | |
| Weight | ＜3.9kg | |
| 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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