低信噪比信号去噪的研究  

Research of denoising of the low signal-to-noise ratio signal

作　　者：吴强[1] 张福泰[1] 何竹青[2] 沈玲玲[1] 

机构地区：[1]南京师范大学数科院,210097 [2]东南大学,南京210096

出　　处：《微计算机信息》2009年第10期310-311,314,共3页Control & Automation

摘　　要：本文提出了最大似然估计阈值的去噪处理法,并用其对一加噪脉冲信号进行去噪,结果表明该方法的去噪效果明显优于软/硬阈值去噪法,同时将其运用于实测信号中,取得了令人满意的结果。The paper presents a maximum likelihood estimation method to denoise signal, and it has been propOsed to denoise a pulse signal with adding noise. The results show that the method is better than the soft or hard threshold method. At the same time, it is used in the measured signal, and obtains the satisfied results.

关 键 词：小波 软阈值 硬阈值 最大似然估计阈值 

分 类 号：TN911.71[电子电信—通信与信息系统]