摘要
分析了光纤陀螺(FOG)信号噪声产生的原因,根据FOG信号零点漂移的不稳定性和随机性,在多小波多分辨率分析的基础上将多小波变换应用到FOG信号滤波处理中,并与标量小波多尺度分析进行了对比;理论分析和实验表明:多小波和标量小波都能在一定程度上抑制噪声对初始对准精度的影响,但多小波的滤波效果优于标量小波。
The principle of noise of fiber optic gyro(FOG) is researched and the multiwavelet is used to denoise the FOG signal based on the theory of multiresolution analysis of multiwavelet transform according to the properties of nonstationary and nonnormal distribution of bias drift of FOG. The theoretical analysis and experimental results show that both multiwavelet and scalar wavelet are useful to eliminate the noise effectively and guarantee the initial alignment accuracy, but the mulitwavelet outperforms the scalar wavelet.
出处
《测控技术》
CSCD
2005年第7期60-62,共3页
Measurement & Control Technology
基金
高等学校博士学科点专项科研基金资助项目(20020699014)
关键词
多小波
光纤陀螺
陀螺漂移
multiwavelet
fiber optic gyro(FOG)
gyro drift rate
