摘要
为提高光纤陀螺的使用精度,提出一种基于小波变换的光纤陀螺信号去噪方法。根据小波变换的原理,使用四阶Daubechies小波对光纤陀螺信号进行分解,选择改进阈值法对小波系数进行重构。该方法能有效滤除噪声并保留有用信号,克服了硬阈值与软阈值的缺陷,能有效地提高光纤陀螺的使用精度。
For improving fiber gyro efficiency, put forwards a de-noising method of fiber gyro signal based on wavelet transform. According to wavelet transform theory, use 4-steps Daubechies wavelet to decompose fiber gyro signal, select improved threshold method to reconstruct wavelet coefficient. The method can effectively de-noise and keep useful signal. Overcome the shortcoming of hard threshold and soft threshold and effectively improve useful accuracy of fiber gyro.
出处
《兵工自动化》
2013年第3期70-71,82,共3页
Ordnance Industry Automation
关键词
光纤陀螺
小波变换
改进阈值
降噪
fiber gyro
wavelet transform
improvement threshold
de-noising
