一种优化的激光陀螺自适应抖动剥除算法  

An Optimized Algorithm for RLG Adaptive Dither Stripping

作　　者：蔡刚刚[1] 谢元平[1] 王新[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《半导体光电》2012年第2期179-183,共5页Semiconductor Optoelectronics

摘　　要：去除激光陀螺输出信号中的抖动信号是机械抖动偏频激光陀螺(MDRLG)信号处理电路的主要工作之一。文章对LMS算法中误差因子响应特性对LMS自适应抖动剥除效果的影响进行了研究。为改善抖动剥除效果,在自适应抖动剥除算法中引入了带通滤波器,并采用基于FPGA的激光陀螺自适应抖动剥除系统对误差因子采用带通滤波时的静态性能和动态响应特性进行了测试。试验结果表明,误差因子采用带通滤波时,LMS自适应抖动剥除的收敛速度和收敛精度都要优于差分运算,并且二者具有相同的动态频率响应曲线。Dither signal removal is important for mechanical dithered ring laser gyro（MDRLG） signal processing.The impaction of the error item＇s response property on the LMS adaptive dither-stripping algorithm was researched.To improve the dither-stripping effect,the band-pass filter was applied in the adaptive dither-striping algorithm.Then,the static and dynamic properties were tested by using the FPGA-based adaptive dither stripper.Test results show that the LMS dither stripper with band-pass filter presents faster convergence velocity and higher precision than that with difference,and they have the same dynamic response curves.

关 键 词：激光陀螺 抖动剥除 自适应滤波 带通滤波器 

分 类 号：TN249[电子电信—物理电子学]