Research on Properties of Hilbert Spectrum
Hilbert-Huang transform (HHT) is a new method of processing non-stationary signals. The method consists of two parts: the empirical mode decomposition (EMD), and the Hilbert spectral analysis. HHT method is introduced. Some properties of it are presented. Firstly, Hilbert spectrum is linear, and it satisfies the principle of superposition without the cross-term interferences which exist in Wigner-Ville distribution. Secondly, Hilbert spectrum has local property, and compared to wavelet analysis, it has excellent time-frequency conglomeration. In addition, Hilbert spectrum has real number property. Finally, it has the adaptive frequency multi-resolution property. Examples from simulation experiment are given to demonstrate the power of the properties. These properties are of great importance to its application in measurement data processing.
Non-stationary signal Time-frequency analysis Hilbert-Huang transform Hilbert spectrum Adaptive frequency multi-resolution propertiy
Ren Zhong Zhang Haiyong
Department of Information & Communication Engineering,Dalian Naval Academy,Dalian 116018 China
国际会议
西安
英文
2007-08-16（万方平台首次上网日期，不代表论文的发表时间）