STG-70A three-axis fiber optic gyroscope
all-temperature performance, start-up performance, the nominal
index can be reached when the power is turned on, and no preheating
is required
STG-70A three-axis fiber optic gyroscope
all-temperature performance, start-up performance, the nominal
index can be reached when the power is turned on, and no preheating
is required
| Indicators | Model | STG-70A |
| Performance indicators | bias stability① (°/h, 1σ) | 0.05 |
| bias stability② (°/h, 1σ) | 0.015 |
| bias stability③ (°/h,1σ) | 0.08 |
| bias repeatability(°/h, 1σ) | 0.015 |
| random walk(°/h 1/2) | 0.003 |
| scale factor nonlinearity(ppm) | 20 |
| scale factor asymmetry(ppm) | 5 |
| scale factor repeatability(ppm) | 10 |
| dynamic range(°/s) | ±500 |
Mechanical/ electrical interface | size(mm) | Circuit: rely on customer Header:70×70×24.8 |
| weight(g) | ＜750g |
| steady state power consumption at normal temperature(W) | 4 |
| 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-70A 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 SLD light source, fiber
coupler, photodetector, integrated optical phase modulator, fiber
sensing ring, circuit and structure.
Designed for tactical 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.
◾ 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
• Missile borne inertial navigation system
• Attitude indicator
• Optical fiber compass
◾Performance indicators
• Turn-on time (s) 3
• Dynamic range (°/s) ±500
• Zero position(°/h ) ≤0.5
• Bias stability① (°/h , 1σ) ≤0.05
• Bias stability② (°/h , 1σ) ≤0.015
• Bias stability③ (°/h , 1σ) ≤0.08
• Bias repeatability (°/h , 1σ) ≤0.015
• Bias magnetic sensitivity (°/h/Gs) ≤0.05
• Random walk (°/h 1/2) ≤0.003
• Scale factor non-linearity (ppm) ≤20
• Scale factor asymmetry (ppm) ≤5
• Scale factor repeatability (ppm) ≤10
• Threshold(°/h ) ≤0.05
• Resolution(°/h ) ≤0.05
• 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 According to the customer’s platform
• Weight ＜750g
• 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
