FG-98C
Bias stability(10s smoothing,1σ):0.015°/h
Bias stability(100-second smoothing,1σ):0.005°/h
Bias stability(100-second smoothing,1σ,temperature change):0.015°/h
Dimensions:98mm×98mm×33.5mm
Weight:520±20g">

FG-98C

Fiber Optic Inertial


FG-98C
Bias stability(10s smoothing,1σ):0.015°/h
Bias stability(100-second smoothing,1σ):0.005°/h
Bias stability(100-second smoothing,1σ,temperature change):0.015°/h
Dimensions:98mm×98mm×33.5mm
Weight:520±20g
Technical Support

Product Introduction

FG-98C is a fully solid-state, digital closed-loop, tactical-grade single-axis fiber optic gyroscope. Based on the SAGNAC principle, it consists of an SLD light source, fiber coupler, photodetector, integrated optical phase modulator, fiber sensing coil, circuit, and structure. The C model is an upgraded version of the FG-70, featuring high stability and reliability while delivering enhanced performance indicators. The H model adopts higher-grade components and stricter manufacturing and testing processes, achieving navigation-grade gyroscope performance. They are widely used in the fields of navigation, and control.

 

Product Features

· Single 5V power supply

· Excellent full-temperature performance

· Excellent start-up performance: meets nominal indicators instantly after power-on, no warm-up required

· Excellent environmental adaptability, resistant to strong shock and vibration

· Interference fringe recognition technology, supporting full dynamic range cold start

· High reliability

· No dead zone

Applications

· High-precision stabilized platforms

· Positioning and orientation systems

· North Seeker

· Attitude and heading reference systems (AHRS)

· Fiber optic compasses

· Strapdown inertial navigation systems (SINS)

Technical Indicators

Category

Indicator

FG-98C

FG-70H

 

 

 

Performance Indicators

Bias (°/h)

0.3

0.5

Bias Stability① (°/h, 1σ)

0.015

0.03

Bias Stability② (°/h, 1σ)

0.005

0.01

Bias Stability③ (°/h, full temperatures, 1σ)

0.015

0.05

Bias Repeatability (°/h, 1σ)

0.005

0.01

Bias Magnetic Sensitivity (°/h/Gs)

0.005

0.01

Random Walk (°/h ½)

0.0008

0.003

Scale Factor Nonlinearity (ppm)

2

10

Scale Factor Asymmetry (ppm)

2

5

Scale Factor Repeatability (ppm)

5

10

Dynamic Range (°/s)

±300

±300

Start-up Time (s)

3

3

Bandwidth (Hz, -3db)

>200

>500

Mechanical/Electrical Interface

Dimensions (mm)

98×98×33.5

70×70×31

Weight (g)

520±20

220±10

Room Temperature Steady-State Power Consumption (W)

≦2.5

≦2.5

Supply Voltage(V)

+5

+5

Operating Temperature (℃)

-45~+70

-45~+70

Storage Temperature (℃)

-55~+85

-55~+85

Vibration (1σ, 20Hz~2000Hz)

6.06g

6.06g

Shock (g, ms, 1/2sin)

30g, 6ms-8ms

30g, 6ms-8ms

Communication Interface

RS422, etc.

RS422, etc.

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