Multi-seismic-phase wave field inversion method considering body waves and surface waves in rock half-space field

The invention provides a multi-seismic-phase wave field inversion method considering body waves and surface waves in a rock half-space field, so as to overcome the defect that a surface wave field is neglected in an existing inversion method. The method comprises the following steps of: extracting Rayleigh surface wave components which strictly meet standard elliptical polarization characteristics in a half-space field on the basis of a complex angle Snell law and forward and inverse theories of body waves; then body waves in the earth surface seismic oscillation data are separated from Rayleigh surface wave seismic phases, P-SV body wave coupling motion is decoupled through propagation difference of P waves and S waves, and S wave before-arrival components are intercepted to serve as motion controlled only by the P waves; performing surface wave field inversion according to the surface Rayleigh surface wave component, and performing body wave field inversion according to the body wave incident angle and the