Application of multi-synchrosqueezed genaralized s-transform in seismic time-frequency analysis

Time-frequency (TF) analysis is an important tool in seismic data processing that describes the frequency response of subsurface rocks and reservoirs. In this paper, we propose a new TF method to characterize the time-varying feature of seismic signals, the proposed method is based on a generalized S-transform and employs a multi-synchrosqueezing algorithm. The technique provides a highly energy-concentrated TF representation using a novel local estimation of instantaneous frequency. Synthetic and field data examples show that the proposed method has a superior performance in depicting strong time-varying signals and can be used to identify subtle stratigraphy with high resolution.