The physical basis of the method for detecting subsurface objects in the earth is described on the basis of excitation of the Rayleigh shock seismic waves along the earth-air interface and registration by the radar method of the Doppler phase shift arising under the action of seismic impacts of vibrations of the search object body. The energy dependencies for the radar channel are estimated, the binding parameters of the seismic emitter and the radio channel are given. The results of experimental work and mathematical processing of the data are presented.