An Improved Method of Detecting and de-noising by the Modulus
An improved de-noising method based on modulus maxima of wavelet transform is proposed. The theoretical calculation formula of noise variance at each scale and improved threshold method are proposed to realized the signal-noise separation. The results of simulation analysis of many non-stationary signal show that: the filtering accuracy can be significantly increased by the new method and the noise can be removed while the major details are remained well.
Modulus mazima Lipschitz ezponent wavelet de-noising threshold
Li Hua Cheng Wei
School of Automation and Electrical Engineering, Lanzhou Jiao tong University, Lanzhou 730070
国际会议
2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)
广西桂林
英文
5304-5308
2009-06-17（万方平台首次上网日期，不代表论文的发表时间）