Seismic Signals analysis And Identification

Great deals of signals obtained from field-testing have been processed in time and frequency domain with Short Time Fourier Transform and wavelet package transform techniques. On the basis of far distance seismic signal, target recognition has been made by BP neural network, the result indicates that the recognition ratio is as high as 85% on the eigenvector of wavelet package decompose, and shows that the eigenvector of wavelet package decompose has better performance.