Fidelity imaging method based on wave field extrapolation of scalar wave
An imaging method and wave field technology, applied in the field of seismic exploration data processing, can solve the problems of FWI+LS_RTM not achieving the application effect and the data requirements do not match, and achieve the elimination of low wavenumber noise, accurate imaging results, and accurate imaging results. Effect
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[0015] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.
[0016] Such as figure 1 As shown, the fidelity imaging method based on scalar wave field extrapolation provided by the present invention includes the following contents:
[0017] 1. Assuming that the underground medium is isotropic, uniform, and constant density, according to Newton's second law and Hooke's law, the scalar wave equation describing the propagation law of the seismic wave field excited by the source in the underground medium is obtained:
[0018]
[0019] Among them, V is the propagation velocity of seismic wave in the ground, u(x,t) is the wave field at the underground position x at a certain time t, f(t) is the source function,▽ 2 is the Laplace op...
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