Research and application of Rayleigh wave extraction method based on microtremors signal analysis

This study investigates the method and application of single-channel, three-component microtremor signal co-directional Rayleigh surface-wave extraction. The research focuses on filtering linear polarization waves using polarizability wave phase-difference filtering, which were analyzed based both simulated data real signals. Additionally, examines use time-frequency analysis to analyze signals identify propagation direction. combination these methods leads a set procedures for extracting high-SNR surface from signals, was applied elliptical imaging method. Results indicate that proposed processing process effectively filters accurately determines direction wave, leading significant improvement in accuracy exploration results. provides reference obtaining high signal-to-noise ratio seismic exploration.