Extraction of Local Power Feature from Frequency Bands Based on Wavelet Analysis
Wang Haibin · Xihua Daxue xuebao. Zhexue shehui kexue ban · 2007
In this paper,a new feature extraction method based on wavelet analysis was presented.The frequency time-variation was considered in this method,so signals could be analyzed and processed accurately.The method was applied to three kinds of signals,i.e.the frequency hopping signal,the decaying signal on amplitude and the signal comprising instant signal.The results obtained show that the method is effective.