Nettet18. okt. 2015 · Our method combines the advantages of the least-squares migration and the efficiency of the Gaussian beam propagator. This approach is implemented in the … NettetWe propose a true-amplitude Gaussian beam migration (GBM) method under the framework of seismic illumination compensation. A novel scheme based on the GBM is developed to estimate the point spread functions, with which the illumination compensation can be efficiently implemented in the local wave-number domain.
Image domain least-squares migration with a Hessian matrix …
NettetAs the aim of least-squares migration, the proposed illumination-compensated Gaussian beam migration produces true-amplitude images in subsalt areas, which facilitates the seismic interpretation of subsalt structures. Nettet1. feb. 2024 · This review paper includes: summarizing the development of the seismic imaging; overviewing the principles of three typical imaging methods, including common reflection surface (CRS) stack, migration-based Gaussian-beam migration (GBM) and reverse-time migration (RTM), and inversion-based least-squares reverse-time … shut off onedrive windows 11
Elastic common-receiver Gaussian beam migration of 4C ocean …
NettetAs the demand for ore resources increases, the target for mineral exploration gradually shifts from shallow to deep parts of the Earth (>1 km). However, for the ore-hosting strata, it is difficult to obtain high-resolution images by using the electromagnetic method. Seismic full waveform inversion (FWI) is an optimization algorithm which aims at … Nettet10. apr. 2024 · We propose a least-squares migration approach based on the time-domain Gaussian beam summation, which helps to balance subsurface illumination … NettetLeast-squares Gaussian beam migration in viscoacoustic media. Article. Oct 2024; Yubo Yue; Yujin Liu; Yaonan Li; Yunyan Shi; Because of amplitude decay and phase dispersion of seismic waves ... the paediatric dentist gold coast