摘要
在建立闭环光纤陀螺光路数学模型的基础上,结合检测电路的闭环算法,分析了光源光功率、偏振度对闭环光纤陀螺的影响,推导出闭环光纤陀螺固有的标度因数误差,并进行了计算机仿真和实验验证,结果表明在实际闭环光纤陀螺中电路增益已经足够大使得光功率波动对其没有影响;通过减小和稳定光源出射光的偏振度有利于降低陀螺噪声,提高零偏长期稳定性和减小闭环光纤陀螺固有标度因数误差。
The effect of the power and Degree of Polarization （DOP） of source on the system performance was analyzed. And the inherent scale factor error in closed-loop Fiber Optic Gyroscope （FOG） was derived through theoretical analysis, computer simulations and experimental verification with a mathematical model established. The results indicate that the gain is high enough in physical closed-loop FOG so that fluctuation of source power has no effect upon system, and demonstrates that the bias drift can be suppressed and inherent scale factor error can be reduced by decreasing and stabilizing DOP of source.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2007年第5期62-66,108,共6页
Opto-Electronic Engineering
关键词
光纤陀螺
光功率
偏振度
标度因数
Fiber optic gyroscope, Light power
Degree ofplarization
Scale factor
