Apparatus and method for imaging a subsurface using frequency domain reverse time migration in an elastic medium

摘要

The imaging device and method of underground structures using frequency-domain reverse time compensation structure in the elastic medium is disclosed . In the imaging method of geologic structure to indicate the condition of the image in the frequency domain by measured data and partial differential wave convolution sheets , by applying a back propagation algorithm expresses the imaging conditions as a virtual source and the de- spread sheet wave convolution . Then , remove the back-propagation wave field and the virtual source vector represented by the displacement vector potential of the P and S waves in the Helmholtz decomposition (Helmholtz decomposition) proposes a new imaging conditions . ;