Relative amplitude-preserved point spectrum analog high-resolution processing method based on improved S-transform

The invention belongs to the geophysical exploration technology, and relates to a relative amplitude-preserved point spectrum analog high-resolution processing method based on improved S-transform. After the acquisition of seismic data, improved S-transform processing is performed on one piece of the seismic data to obtain the two-dimensional time-frequency spectrum of the piece of seismic data, and point spectrum analog high-resolution processing is performed in a time-frequency domain to realize relative amplitude-preserved processing on the seismic data. By performing wavelet amplitude spectrum analog processing on the point spectrum in the two-dimensional time-frequency spectrum of the seismic data, the wavelet amplitude spectrum of all sampling point time of the piece of seismic data can be obtained, namely, the two-dimensional wavelet amplitude spectrum of the time-frequency domain. High-resolution seismic data can be obtained by designing a two-dimensional deconvolution operator of the time-frequency domain according to the wavelet amplitude spectrum and applying the deconvolution operator to the seismic data. Through point spectrum analog high-resolution processing in the time-frequency domain, the influence of the time-varying characteristics of wavelets in the seismic data is overcome, and the spectrum characteristic and time-frequency characteristic of original data can be kept effectively. The method of the invention is a relative amplitude-preserved deconvolution processing technology.