一种基于可逆变换的小波去噪算法

Mao Heng, Xu Jiangning, Zhu Tao
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引用次数: 1

摘要

传统的小波收缩去噪方法在传感器信号中含有跳变不连续点时产生伪吉布斯振荡。为了解决这一问题,本文提出了一种基于可逆平移的小波收缩去噪算法。该算法通过去除不连续点来消除伪吉布斯振荡。从理论上证明了其合理性,最合适的母小波是Harr小波。同时,仿真数据和真实航线信号表明,该算法能有效消除伪吉布斯振荡,提高去噪信噪比。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new wavelet de-nosing algorithm based on reversible transform
Traditional wavelet shrinkage de-noising methods always produce Pseudo-Gibbs oscillations when sensor signals contain jump discontinuity points. In order to solve this problem, this paper presents a wavelet shrinkage de-noising algorithm based on reversible translation. The algorithm can eliminate Pseudo-Gibbs oscillations by removing the discontinuity points. Its rationality is proven theoretically and the most appropriate mother wavelet is Harr wavelet. At the same time, the simulation data and real course signal show that this algorithm can effectively eliminate Pseudo-Gibbs oscillations and improve denoising SNR.
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