Wavelet Analysis of Singular Signal Detection
Based on wavelet transform multiresolution analysis, the singular points of the singular signal can be used to estimate the singularity. Using the relationship between wavelet transform modulus maxima and singular point, the signal singular point location can be analyzed; the local singularity is described by Lipschitz index. The qualifications of wavelet base for the singular signal detection are studied. It can determine location of signal singular point and singular exponent of singular signal. Through the example, it is concluded that wavelet transform have specific property for singular signal detection and location analysis. Wavelet transform can analysis the signal elements at certain frequency band and time section, which has good time frequency localization and can seize character of instantaneous changing signals accurately and focus any details of signal for frequency through gradually meticulous sampling step of time field and frequency field.
wavelet analysis wavelet transform modulus maxima signal processing transient signal singular point singular exponent
Zhang Xiaochun
North China Institute of Science and Technology,Beijing 101601,China
国际会议
北京
英文
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）