STG-120H/HC three-axis split fiber optic gyroscope
a full solid-state high-precision digital closed-loop fiber optic
gyroscope integrating optics, mechanics and electricity.
STG-120H/HC three-axis split fiber optic gyroscope
a full solid-state high-precision digital closed-loop fiber optic
gyroscope integrating optics, mechanics and electricity.
| Indicators | Model | FG-120C/H |
| Performance indicators | bias stability① (°/h, 1σ) | 0.005/0.003 |
| bias stability② (°/h, 1σ) | 0.0015/0.001 |
| bias stability③ (°/h,full temperature, 1σ) | 0.01/0.005 |
| bias repeatability(°/h, 1σ) | 0.0015/0.001 |
| random walk(°/h 1/2) | 0.0003/0.0002 |
| scale factor nonlinearity (ppm) | 2/1 |
| scale factor asymmetry (ppm) | 2/1 |
| scale factor repeatability(ppm) | 5/5 |
| dynamic range(°/s) | ±500 |
| Mechanical/Electrical interface | size(mm) | 120×120×36 |
| weight(g) | 870±10/880±10 |
| steady state power consumption at normal temperature(W) | <2.5 |
| power supply(V) | +5 |
| communication interface | RS422 |
Remarks: ① Static test at room temperature, 10s smooth, 1σ; ② Static test at room temperature, smooth for 100s, 1σ; ③ The temperature change rate is 1℃/min, smooth for 100s, 1σ. | |
◾ Product introduction
STG-120H/HC three-axis fiber optic gyroscope is a full solid-state
high-precision digital closed-loop fiber optic gyroscope
integrating optics, mechanics and electricity. Based on the
principle of Sagnac, it is composed of erbium-doped fiber light
source, fiber coupler, photodetector, integrated optical phase
modulator, fiber sensing ring, circuit and structure.
Designed for navigation level precision inertial measurement
system. It has the characteristics of high reliability and flexible
structure. It is a highly customized product produced according to
the customer's platform.
HC type can reach precision level precision.
◾ Product features
• Single 5V power supply, extremely low power consumption
• Excellent all-temperature performance
• Excellent start-up performance, the nominal index can be reached
when the power is turned on, and no preheating is required
• Excellent environmental adaptability, strong impact and vibration
resistance
• Interference fringe recognition technology, supporting full
dynamic range cold start
• High reliability
• No dead zone
◾ Typical applications
• Strapdown inertial navigation system
• Attitude indicator
• Optical fiber compass
• Positioning and orientation system
• “Three self ” inertial navigation system
◾ Performance indicators
• Turn-on time (s) 3
• Dynamic range (°/s) ±500
• Zero position(°/h ) ≤0.25
• Bias stability① (°/h , 1σ) ≤0.005/0.003
• Bias stability② (°/h , 1σ) ≤0.0015/0.001
• Bias stability③ (°/h , 1σ) ≤0.008/0.005
• Bias repeatability (°/h , 1σ) ≤0.0015/0.001
• Bias magnetic sensitivity (°/h/Gs) ≤0.005
• Random walk (°/h 1/2) ≤0.0003
• Scale factor non-linearity (ppm) ≤5/5
• Scale factor asymmetry (ppm) ≤2/2
• Scale factor repeatability (ppm) ≤5/5
• Threshold(°/h ) ≤0.005/0.003
• Resolution(°/h ) ≤0.005/0.003
• Bandwidth(Hz) ≥200
◾ Physical/Electrical
• Power supply +5V
• Steady-state power consumption ≤3W
• Steady-state power consumption at full temperature ≤4W
• Instantaneous power consumption at startup ≤4W
• Dimensions of circuit box 60mm×60mm×28mm
• Dimensions of meter Ф120mm×23.3mm
• Weight ＜2300g
• Electrical form RS422
◾ Environmental adaptability
• Operating temperature -45℃ - +70℃
• Storage temperature -55℃ - +80℃
• Vibration 6.06g(RMS, 20Hz-2000Hz
• Impact 30g, 6ms-8ms
• Average trouble-free time 8000h
