干涉型光纤陀螺微小信号的检测与分析  

Measurement and analyse to low signal of IFOG

作　　者：钟敏[1] 熊智[1] 赖际舟[1] 刘建业[1] 

机构地区：[1]南京航空航天大学导航研究中心,江苏南京210016

出　　处：《传感器与微系统》2006年第2期21-23,26,共4页Transducer and Microsystem Technologies

摘　　要：干涉型光纤陀螺(IFOG)是一种新型的光学陀螺仪,其性能直接决定了惯性导航系统的精度。由于静态情况下IFOG的模拟信号较弱小,容易被各种噪声淹没,因此,无法对IFOG的静态性能做出正确的评估。针对某型号IFOG输出信号的特点,提出了一种微弱信号检测和滤波方案,通过大量的静态和动态试验证明:该方案能显著提高IFOG输出信号的信噪比,将IFOG原始输出信号从各种噪声中有效、实时地提取出来。同时,该方案价格相对低廉。Interferometric fiber-optic gyro （IFOG） is a new fiber-optic gyro, whose performance decides the precision of the inertial navigation system. The analog signal of IFOG is so weak that it is easily disturbed by many kinds of noises when it is static. So it is hard to evaluate the static performance of IFOG. A project which can measure and filter this weak signal is advised aimed at some IFOG. It is proved that this project can improve S/N of IFOG＇ s output and effectively pick-up the original signal at real-time from all kinds of noises by a lot of static and dynamic experiments. Meanwhile this project is relatively cheap.

关 键 词：干涉型光纤陀螺 微弱信号 自适应滤波 

分 类 号：V241.622[航空宇航科学与技术—飞行器设计]