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.

◾ 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 stability^① (°/h , 1σ) ≤0.005/0.003

• Bias stability^② (°/h , 1σ) ≤0.0015/0.001

• Bias stability^③ (°/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