Transformation of point-to-line source seismogram in a 2-D geological model

Point-source to line-source transformation for seismic data prior to 2-D full waveform inversion is recommended for efficiently producing high-resolution images of the subsurface. The traditional filter of the transformation is derived by comparison of 3-D and 2-D Green's function inhomogeneous acoustic media, so it doesn't guarantee accurate transformation in complex heterogeneous viscoelastic anisotropic media. We adhere to a straightforward filter for compensating amplitude, incorporating offsets and phase shifts, and adjusting the stretching factors to rescale amplitude differences across various components. Additionally, we devise new stretching factors to accommodate time-domain transformations. Testing the proposed method with multi-layer and Marmousi models validates better amplitude compensation in both near and far offsets than the traditional hybrid method.