Dubhe-M1 – Marine RLG Inertial Navigation System Unit
RLG (Dubhe-90)
The Dubhe-90 Ring Laser Gyroscope (RLG) operates based on the Sagnac effect, measuring angular increments by detecting phase differences between counter-propagating laser beams in a closed glass cavity.
With high integration, excellent reliability, strong environmental adaptability, and stable performance, the Dubhe-90 has become a widely used sensor for high-precision inertial navigation systems (INS).
Applications
-
Spacecraft
-
Aircraft
-
Satellites
-
Vehicles
-
Ships
-
Submersibles
Used for navigation and attitude reference.
Key Features
-
Monolithic optical and electronic integration for easy installation
-
Compact and lightweight design with controlled power consumption
-
High reliability with strong shock and vibration resistance
-
Wide dynamic response bandwidth with digital output
| Series | 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 | |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.