Blackman窗插值的小波模极大值去噪算法  

Denoising algorithm of wavelet modulus maximum based on Blackman window interpolation

作　　者：赵鸿图[1] 刘云[1] 

机构地区：[1]河南理工大学计算机科学与技术学院,河南焦作454000

出　　处：《计算机工程与应用》2015年第13期216-220,共5页Computer Engineering and Applications

基　　金：国家创新方法工作专项项目(No.2010IM020500)

摘　　要：提出了Blackman窗插值算法,通过Ad Hoc算法得到信号模极大值,利用Blackman窗对信号模极大值点进行插值,得到信号的估计小波系数进而依此小波系数直接重构信号。仿真结果表明,该算法具备了模极大值直接重构算法的快捷性和交替投影法的精确性,提高了信噪比,降低了失真度。The Blackman window interpolation algorithm is put forward,the signal modulus maxima are obtained by Ad Hoc algorithm,the signal estimated coefficients of wavelet can be obtained from the interpolation of Blackman window between the modulus maxima points of signal and reconstruct signal by the signal estimated wavelet coefficients.The simulation results demonstrate that the novel algorithm with the fast speed of modulus maximum direct reconstruction algorithm and the accuracy of alternating projection algorithm,improves the SNR and reduces the distortion.

关 键 词：Blackman窗插值 模极大值 小波系数 重构信号 

分 类 号：TN911.72[电子电信—通信与信息系统]