Dubhe-M48 Marine Inertial Navigation System with 0.01°/hr Gyro Accuracy and 232×186×160mm Dimensions
The Dubhe-M48 High Precision Velocity Integrated Marine Inertial Navigation System is a sophisticated marine optical INS designed for long-endurance operations. It employs laser/FOG gyros and quartz flexure accelerometers as core sensors, utilizing a "strapdown + modulation" technical architecture with advanced navigation algorithms to deliver real-time navigation solutions.
| Parameter | Specification |
|---|---|
| Accelerometer Bias Repeatability (1σ) | ≤10μg |
| Accelerometer Scale Factor Accuracy (1σ) | ≤10ppm |
| Gyro Bias Repeatability (1σ) | ≤0.01°/hr |
| Gyro Scale Factor Accuracy (1σ) | ≤10ppm |
| Gyro Random Walk (1σ) | ≤0.003°/√hr |
| Speed Accuracy (Pure Inertial) | ≤0.6kn, RMS |
| Speed Accuracy (GNSS Combination) | ≤0.4kn, RMS |
| Position Accuracy (Pure Inertial) | 1nm/48h, CEP |
| Position Accuracy (INS/DVL Combination) | ≤0.3%D, RMS |
| Heading Accuracy (Pure Inertial) | ≤0.04°sec(L), RMS |
| Heading Accuracy (INS/GNSS Combination) | ≤0.02°, RMS |
| Pitch & Roll Accuracy (Pure Inertial) | ≤0.02°, RMS |
| Pitch & Roll Accuracy (INS/GNSS Combination) | ≤0.01°, RMS |
| Startup Time | ≤10sec |
| Alignment Time | ≤1hr |
| Power Consumption | ＜40W |
| Dimensions (L×W×H) | 232×186×160mm |
| Weight | ＜8.2kg |
| Operating Temperature | -40℃~60℃ |
| Input Voltage | DC24V(±25%) |
| MTBF | ＞10000 hours |
- Multiple operational modes: pure inertial, GNSS-aided, and velocity-integrated
- High angular rate capability: ≥±400°/sec
- Robust angular acceleration: 100000°/sec²
- High acceleration tolerance: ＞25g
- Flexible angular attitude: Any orientation
- Comprehensive I/O: 3 RS422 full-duplex serial ports, 1 100M Ethernet port
- Rugged construction: withstands 15g shock and 6.06g vibration
- Efficient cooling: conduction to mounting plate
The Dubhe-M48 provides enhanced full-state navigation parameters to meet various marine platform requirements. With position accuracy better than GNSS in combination mode and heading accuracy of ≤0.02° RMS, this system delivers exceptional performance for demanding maritime applications.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.