Abstract：A signal can be transformed from time domain to frequency domain by Fourier transform.Similary, by slant stack, a signal can be converted from time-space domain to z-p domain so that some problems which are difficult to solve' in time-space domain can be easy resolved in z-p domain, The filtering in z--p domain can eliminate noises such as shallow refraction, surface waves, etc.The inverse transform from;-p domain to time-space domain can improve SjN ratio.Spatial trace interpolation .can be made in z-p domain.
