The Research On The Instantaneous Feature Extraction Of The Signal Based On Wavelet

In practice,we are often up against some signals that its modulated type is not clear. It is the chiefly problem of signal disposal to recognize its modulated type and its essential characters rightly .In this paper, using the characteristic of wave-transform to recognize the abrupt signals, we put forward an idea of wavelet-transform-curve in order to extract the instantaneous-extent,instantaneous-frequency,instantaneous-post-ure of signals.accordingly we can recognize the signals .In this paper we also bring forward an iterative algorithm to gain the wavelet-transform.At the same time I achieved less error result by means of improving the initial-valued.The morever ,In this paper,I also give five algorithms in numerical computation that can extract the wavelet-ridge-curve .For all these algorithms ,being based on the time that calculated the all sampling-points of wavelet-ridge-curve, I made a contrast.As a result,it indicates that this iterative algolrithm is a effective method.