Modeling and Simulation for Artificial Seismic Waves Based on Three-parameter Chirp Atoms

摘要

We used the sum of some of the three-parameters Chirp atoms as the model of the seismic data, that is, decomposed the seismic data into a series of Chirp atoms and obtained simultaneity the parameters of each Chirp atom. And then, selected some primary Chirp atoms to approach the artificial seismic waves. The simulation results have shown that the modeling and simulation for artificial seismic waves based on the Chirp atoms approximation is an ideal candidate for extracting the local time-frequency information from seismic recorder. The resulting frequency-dependent modulating more accurately reveals the non-stationary frequency characteristic of ground motion and the same time it also preserves the non-stationary intensity of the seismic data.