摘要
在介绍小波包定义和降噪声原理的基础上,提出了采用小波包变换降低噪声的方法。为验证该方法的有效性,将其用于某型导弹试验中所测遥测数据的降噪处理中,并与小波变换降噪效果进行比较。结果表明,小波包变换改进了遥测速变数据的消噪效果,是速变信号降噪一种更为有效的方法。
Based on defining the wavelet packet transformation and introducing the theory of noise reduction,the paper proposes to use the wavelet packet transformation to reduce the noise in telemetry data.Then this method is validated in a kind of missile test data and compared the effect with that of the wavelet analysis.The result indicates that the wavelet packet transformation improved the effect of de-noising.It is a more effective way to remove the noise in telemetry rapid variation data.
出处
《飞行器测控学报》
2009年第3期57-60,共4页
Journal of Spacecraft TT&C Technology
关键词
小波包变换
小波包分解
小波包分解树
最佳小波包基
Wavelet Packet Transformation
Wavelet Packet Factorization
Tree of Wavelet Packet Factorization
Optimal Wavelet Packet Base
