Gyrosens is a professional manufacturer and OEM/ODM provider of inertial sensors and navigation solutions since 2008.

GSGYR201F Dual-Axis FOG

GSGYR201F provides dual-axis synchronized angular rate sensing in a 64×60×40mm integrated package weighing 170~200g. Standard grade bias <1°/h and high-grade <0.3°/h. RS422 output with ≥500Hz bandwidth and 3-second startup. This cost-effective dual-axis solution serves electro-optical gimbal stabilization and flight control platforms where two-axis measurement is required without paying for a third axis.

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Product Introduction

GSGYR201F is an inertial angular rate sensor based on the optical Sagnac effect, which is used to measure the rotational angular velocity of a carrier along the direction of its sensitive axis.

It adopts a digital closed-loop detection circuit to extract the optical path difference between clockwise and counterclockwise propagating light—sensed by the optical fiber coil—caused by external physical angular velocity. Meanwhile, it performs modulation and demodulation on the voltage signal converted from the optical path difference signal, and implements closed-loop feedback and control to achieve the purpose of real-time angular velocity signal detection.

Function

This product consists of two parts: an optical angular velocity sensing unit and a signal detection unit. It provides external dual-axis angular increment information and internal temperature information.

Composition

The main components of the product are as follows:

● Optical path unit: Including SLD light source, optical fiber coil, integrated optical phase modulator, optical fiber coupler, and photodetector;

● Circuit unit: Light source driving circuit, signal detection and control circuit;

● Gyroscope structural components.

Dimensions

Technical Specifications

Parameter	GSGYR201F	GSGYR201F-H
Number of Axles	2	2
Power Voltage	+5V DC	+5V DC
Power (25°C)	<3W	<3W
Power (-45°C～+70°C)	<4W	<4W
Supply Current	>1.5A	>1.5A
Output	RS422	RS422
Size	64×60×40mm	64×60×40mm
Run-up Time	3s	3s
Bias	<1°/h	<1°/h
Bias Stability (25°C)	<1°/h	<0.3°/h
Bias Temperature Sensitivity (1°C/min)	<1°/h	<1°/h
Bias Repeatability	<1°/h	<0.3°/h
Bias Magnetic Sensitivity	<0.5°/h/Gs	<0.2°/h/Gs
Random Walk	<0.1°/√h	<0.02°/√h
Scale Factor Nonlinearity	<50ppm	<50ppm
Scale Factor Asymmetry	<10ppm	<10ppm
Scale Factor Repeatability	<20ppm	<20ppm
Threshold	<0.3°/h	<0.1°/h
Resolution	<0.3°/h	<0.1°/h
Bandwidth	≥500Hz	≥500Hz
Weight	170g±10g	200g±10g
Dynamic Range	±500°/s	±500°/s
Start-up Current	<1.5A	<1.5A
Operating Temperature	-45°C～+70°C	-45°C～+70°C
Storage Temperature	-55°C～+80°C	-55°C～+80°C
Supply Voltage Accuracy	<±5%	<±5%
Power Ripple	<50mV	<50mV