The main difficulty of full waveform inversion (FWI) based on local optimization methods is
that it tends to trap in local minima or cycle-skip** associated with inaccurate initial …

Compared with the conventional reverse time migration (RTM), the least-squares reverse-
time migration (LSRTM) can effectively image complex geological structures with the …

Because the source wavefield and receiver wavefield are constructed based on the two-way
wave equation in the reverse time migration, the reflection waves developed in the back …

Traditional FD method has some difficulties in treating irregular surface, while map**
method can overcome the disadvantage by transform the irregular surface to horizontal …

Two-way wave equation based reverse time migration is powerful in imaging complex area.
However, its result usually contains imaging noise which poses challenge to seismic …

The problems of large computation, large storage and low-frequency noises have been the
key factors limiting the development of elastic wave pre-stack reverse-time migration (RTM) …

Elastic reverse time migration (ERTM) uses multicomponent seismic data to image not only
PP but also PS waves. The incorporation of PS imaging substantially mitigates the …

Reverse-time migration (RTM) is a powerful tool for imaging geologically complex structures
such as steep-dip and subsalt. However, its implementation is quite computationally …

Reverse time migration based on the two-way wave equation using cross correlation
imaging can effectively yield migrated sections. However, when extrapolating the wavefield …

Reverse-time migration has attracted more and more attention owing to the advantages of
high imaging accuracy, no dip restriction, and adaptation to complex velocity models. Cross …