摘要
在分析光纤陀螺的噪声特性的基础上,研究光纤陀螺信号滤波的方法,采用基于S te in无偏似然估计原理,对光纤陀螺信号进行小波阈值除噪,从而达到抑制光纤陀螺中存在的1/fr噪声和白噪声的目的。实验结果表明,小波滤波的方法对于抑制光纤陀螺中的噪声,提高信噪比具有良好的效果。
The method that removes the noise in the Fiber of Gyro is studied. The feature of the noise in FOG is analyzed. On the basis of properties of 1/f^r noise in wavelet domain,it is using the wavelet denoising method on the principle of Stein Unbiased Risk Estimate to select a threshold. It attempts to reject 1/f^r noise and white in FOG. The experimental result shows it is effective to suppress the noise of FOG and improve the SNR.
出处
《火力与指挥控制》
CSCD
北大核心
2005年第5期35-37,共3页
Fire Control & Command Control
基金
国防预研基金资助项目(413090503)
关键词
光纤陀螺
小波阈值除噪
1/f^r噪声
惯性导航
fiber of gyro, wavelet threshold de-noise, 1／f^r noise,inertial navigation system
