LLT-EMD Algorithm Based on Wavelet Packets
Huangs Empirical Mode Decomposition (EMD) algorithm sometimes may cause mode mixing because of multi-band included in Intrinsic Mode Function (IMF) components, in addition, the EMD always has illusive components due to the shortcoming of the algorithm itself. This paper puts forward a LLT-EMD algorithm based on wavelet packet which doing pretreatment for signal by wavelet-packet transform firstly, then applying the EMD, finally using Logarithm Likelihood Testing (LLT) method to identify the illusive components. This method to some extent solves the problems of the mode mixing and the illusive component. Simulation and experimental results present the high performance of the proposed method.
Wavelet packets EMD LLT HHT
Yonghong Zhang Xueming Xu
College of Information and Control Engineering Nanjing University of Information Science and Technology Nanjing, China
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
2705-2708
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）