Joint full waveform inversion of multiple instantaneous attributes

Full waveform inversion (FWI) has difficulties in obtaining deep velocity models with high accuracy in practice. Thus, the authors propose a time-domain acoustic FWI method based on the first-order approximate exponential frequency to improve the deep inversion results. However, there is still a lack of partial low-frequency information. Therefore, this article used the time-domain acoustic FWI method with instantaneous amplitude low-frequency and amplitude preservation as the first-order approximate exponential frequency to solve the lack of partial low-frequency components and formed a set of multi-instantaneous attribute joint inversion processes. The tests proved the feasibility and effectiveness of the method.