Focusing Analysis (FAN)
TGS offers practical anisotropic parameter estimation with full-azimuth high-resolution tomography to update models.
TGS focusing analysis (FAN) approach uses demigrated time domain focusing operators to estimate anisotropic parameters for VTI, TTI, and Orthorhombic media. The objective function of the FAN is to find the minimum difference between the true focusing operator and calculated focusing operator. The approach can be used for both surface seismic data and VSP seismic data.