Full-Waveform-Accurate 3-D Inversion for Transient Electromagnetics via Parallel Spectral Methods (opens in new tab)

Conventional three-dimensional (3-D) inversion of transient electromagnetic (TEM) data predominantly employs time-stepping forward modeling, which suffers from inherent limitations in parallelization efficiency and high computational costs. These drawbacks become particularly pronounced when incorporating full transmitting-current waveforms, especially those involving waveform repetitions. To address these challenges, this study proposes a 3-D inversion method based on spectral forward modeli...