Increasing the Lateral Resolution of 3D-GPR Datasets through 2D-FFT Interpolation with Application to a Case Study of the Roman Villa of Horta da Torre (Fronteira, Portugal)

The approach presented in this work uses an interpolation methodology to densify 3D-GPR datasets sharpen the results obtained GPR surveys carried out archaeological environment. It allows estimation of missing data from combined use mathematical transforms, such as Fourier and curvelet predictive filters. This technique makes it possible calculate signal simply by meeting two requirements: frequency domain must be limited a range values able represented distribution coefficients (verified conditions). INT-FFT algorithm open-access routine (Suinterp, Seismic Unix) interpolate B-scans based on seismic trace interpolation. process automatic event identification routines calculating spatial derivatives identify discontinuities space detecting very subtle changes signal, thus allowing for more efficient without artifacts or deterioration. We successfully tested using Roman villa Horta da Torre (Fronteira, Portugal). showed increase geometric sharpness reflectors did not produce any numerical artifacts. tests performed apply GPR-3D allowed assessing efficiency, level data, information lost when we chose distance between acquisition stage.