North Seeker Series
Timing Frequency Series
BDS Receiver Series
Inertial Navigation
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North Seeker Series
SDI-131
SDI-131 is composed of high-precision fiber optic gyroscope, mechanical rotating device and signal solving circuit. The rotation axis of the gyroscope keeps its orientation unchanged relative to the inertial space, while the earth rotates relative to the inertial space around the polar axis with its rotation angular velocity. If the earth is used as a reference, the rotation axis of the gyroscope will be seen to rotate relative to the earth, so the gyroscope can track and measure the angular velocity of the earth’s rotation. Calculate the angular rate signal of the earth’s rotation, calculate the angle between the main axis of the gyro and the true north of the earth, and provide azimuth information for the carrier.
Features
- Small size & Light weight
- Low cost & High precision
- Seeking north independently, without external environmental restrictions
- Simple operation, Seeking North immediately after power-on
- Meet the vehicle use environmen
Application
- North seeker & Guidance
- Navigation and control
- Attitude reference system
- Vehicle heading measurement
- Integrated inertial/Satellite navigation system
- Drilling & production system
- Antenna platform reference orientation
- Special vehicles look north
- Vehicle-mounted weapon system seeks north
Physical and electrical
| Voltage | 18～30VDC |
| Power | ≤20W |
| Dimensions | 125mm×109mm×130mm |
| Weight | ≤1.5kg |
| Warranty | One year |
Performance
| Heading accuracy | 0.1° （1σ， Measuring range 0°～360°） |
| Resolution | 0.01° |
| Pitch/Roll accuracy | ≤0.1°（1σ，Tilt≤15º） |
| Communication port | RS-422(RS-232 optional) |
| Operating mode | Static |
| Baud rate | 9600bps |
| North seeking time | 3 min |
Environmental
| Operating | -40℃～60℃ |
| Storage | -50℃～70℃ |
| Vibration | Using sinusoidal vibration scanning, the test frequency range is 5Hz~5.5Hz, the double amplitude displacement is 25.4mm, the frequency range is 5.5Hz~200Hz, and the acceleration is 1.5g; one scan time is 12min; vibration direction: vertical axis; test duration: 90min. The test equipment is not powered on during the test. |
| Shock | Half-sine pulse, peak acceleration 20g, pulse width 11ms, impact direction: vertical axis, impact times: 3 times. The test equipment is not powered on during the test |
| Humidity | 95%(40℃ Non-Condensing) |