光程倍增光纤陀螺偏振误差相关抵消的研究  

Correlation Counteraction of Polarization Errors in Interferometric Fiber Optic Gyroscope with Double Optical Length

作　　者：张敏[1] 傅长松 王金芳 胡宗福[1] 蒋治国[1] 胡宗福 ZHANG Min;FU Chang-song;WANG Jin-fang;HU Zong-fu;JIANG Zhi-guo;HU Zong-fu(School of Electronics and Information Engineering,Tongji University,Shanghai 201804,China;Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;Shanghai Engineering Research Center of Inertia,Shanghai 201109,China)

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]上海航天控制技术研究所,上海201109 [3]上海惯性工程技术研究中心,上海201109

出　　处：《光子学报》2018年第12期25-33,共9页Acta Photonica Sinica

基　　金：上海航天科技创新基金(No.SAST2015076);上海市青年科技启明星计划(B类)(No.17QB1404300)。

摘　　要：利用光程倍增光纤陀螺的奇、偶时隙输出之间的相关性对陀螺零偏误差进行相关抵消处理。为了验证该方法的有效性,将光程倍增光纤陀螺置于室温,以100s滑动平均,其每秒输出的奇、偶零偏为-0.1°/h、0.08°/h,利用相关抵消的方法处理后,其零偏得以修正且零偏稳定性从0.008°/h提高至0.002°/h.该相关抵消的信号处理方法快速简便且有效,为光程倍增光纤陀螺的精度优化提供了新思路.The correlation between the odd and even time slot outputs of the fiber optic gyro with double optical length is used for the correlation-cancellation processing of gyro zero offset error.To verify the method,the fiber optic gyro with double optical length is at room temperature,with moving average time of 100 s,the per second output biases of odd and even time slot are-0.1°/h and 0.08°/h,after processing of correlation cancellation,the bias is modified and the bias stability is increased from 0.008°/h to 0.002°/h.The correlation counteraction signal processing method is fast,simple and effective,which provides a new idea for the precision optimization of the fiber optic gyro with double optical length.

关 键 词：光纤陀螺 光程倍增 偏振误差 相关抵消 零偏稳定性 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]