应用自适应对消实现激光陀螺抖动信号的剥除  

Dither signal removal of ring laser gyro based on adaptive noise canceling

作　　者：张庆华[1] 胡绍民[1] 龙兴武[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《红外与激光工程》2011年第3期506-510,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目(40876095)

摘　　要：去除抖动信号是机械抖动激光陀螺(MDRLG)信号处理部分的关键工作,传统的去抖方法限制了MDRLG在快速跟踪中的应用。文中基于自适应对消原理,建立了激光陀螺抖动信号剥除的模型,实现了系统硬件电路的设计,并编写了19阶有限脉冲响应滤波程序和最小均方算法、递归最小二乘算法的自适应解调程序。基于该系统,对转台上的激光陀螺从静止加速到200(°)/s的过程进行了测试,实验结果表明:自适应对消能够有效去除陀螺计数脉冲中的抖动成分,其去抖动效果优于19阶的FIR滤波器,且输出角速率是实时的。该去抖算法拓展了MDRLG的应用范围。Dither signal removal is the key of signal processing of mechanically dithered ring laser gyro（MDRLG）.The present dither signal removal methods limit the gyro application in fast tracking.The dither stripper model based on adaptive noise canceling was established and the hardware was designed in this article.The programm of dither signal removal of MDRLG based on 19-order finite impulse response（FIR） filter,least mean-square（LMS） and recursive least-squares（RLS） algorithms was compiled.The system was tested by the ring laser gyro rotated from static state to 200（°）/s.The experimental results show that LMS and RLS adaptive filter perform better than the 19-order FIR filter in dither signal removal,and the output signal is in real time.The dither signal removal method based on adaptive noise canceling is effective,which extends the application range of MDRLG.

关 键 词：激光器 机械抖动激光陀螺 抖动信号剥除 自适应对消 

分 类 号：TN249[电子电信—物理电子学]