基于小波阈值滤波的激光陀螺消噪方法  

Wavelet Threshold-Value Filtering for Signal of Ring Laser Gyro

作　　者：周晶[1] 李天伟[1] 李明海[1] 

机构地区：[1]海军大连舰艇学院航海系,大连116018

出　　处：《光学与光电技术》2006年第3期53-55,共3页Optics & Optoelectronic Technology

摘　　要：利用小波多分辨率分析的特点和分形噪声在小波变换域的特性,采用小波变换域参数估计方法获得噪声参数,然后采用小波阈值滤波方法去除噪声,并比较了三种小波基不同的滤波效果。通过仿真试验,陀螺的零漂值从0．3755°／h减小到了0．1026°／h。Based on the specialty of multl-resolutlon analysis of wavelet and fractal noises in wavelet transform domain, parameter estimation in wavelet transform is applied to obtain parameters of noises, Threshold value filtering method is used to eliminate noises. By eomparing the different results using several basic wavelets, the feasibility of this denoising algorithm is verified.

关 键 词：激光陀螺 分形噪声 小波变换 阈值滤波 

分 类 号：TN253[电子电信—物理电子学]