Aug 21, 2023 · Least squares reverse time migration (LSRTM) imaging is the one of the most accurate methods for migration imaging at present, and Polak–Ribiere–Polyak conjugate...

Born modelling propagates a wavefield in a “background” velocity model. This wavefield interacts with a provided scattering potential at each time step to produce a source term for a second wavefield.

Simultaneous-source acquisition technology can obtain better spatial-sampled blended seismic data with significantly faster efficiency in field survey. However, the strong cross-talk noise …

Least-squares Reverse Time Migration using 1D scalar wave equation. Very simple and for demonstration purposes only. - ar4/lsrtm_1d

Feb 9, 2025 · Extending least-squares reverse time migration (LSRTM) to tilted transverse isotropic (TTI) media (TTI-LSRTM) improves imaging accuracy. However, TTI-LSRTM necessitates multiple migration parameters, including velocity, density, anisotropy parameters, and symmetry axis tilt angle θt of the stratum.

Abstract: Least-squares reverse-time migration (LSRTM) is linearized inversion based on the Born approximation, which commonly seeks to high-quality migration result by the least-squares sense.

Least-squares reverse time migration (LSRTM) is a powerful tool in seeking broadband-wavenumber reflectivity images. It produces better images over reverse-time migration (RTM) at the expense of computational cost. The Hessian effect can be measured in the image domain with the point-spread function (PSF).

Abstract: This study develops prestack least-squares reverse time migration (LSRTM) for high-resolution ground-penetrating radar (GPR) imaging and compares its performance to standard RTM. We use the Born approximation to derive the LSRTM forward operator and we use matrix operations to determine its exact adjoint.

May 25, 2023 · Least-Squares Reverse-Time Migration (LSRTM) is a common tool used to compute such images. Still, its high computational costs have led seismologists to use target-oriented LSRTM for imaging only a small target of interest within a larger subsurface block.

Least-squares reverse time migration (LSRTM) is currently one of the most advanced migration imaging techniques in the field of geophysics.