Improved S-Transform and Its Application in Seismic Signal Processing
Xuehua Chen, Zhenhua He · Shuju caiji yu chuli · 2005
The theory and computational implementations of S-transform(ST) are introduced. To enhance the analytic power of ST in different non-stationary signal processing,a genera-lized S-transform(GST) is achieved by adding an adjusted factor to the Gaussian window function of the normal ST.The adjusted factor changes the velocity in which the width of the window function varies inversely with the frequency.GST possesses an adjustable time-frequency resolution and higher practicability and adaptability than ST in the actual application.The adjusted factor affects the time-frequency resolution in the simulation of several synthetic signal models.Finally,the time-frequency analysis of a 1-D complicated synthetic seismic record is executed by selecting the reasonable adjusted factor.The time-frequency representation with the high quality is obtained.The result demonstrates that GST is an effective means for seismic signal processing.