D. Daniels, E.C. Utsi, GPR case histories and known physical principles, Proc. of 7th International Workshop on Ground penetrating Radar IWAGPR, July 2-5. 2015.

This paper is a classic because it represents an important denounce against false overpromises that in some cases have been done with regard to GPR prospecting.

 

R. Persico, R. Bernini and F. Soldovieri, The role of the measurement configuration in inverse scattering from buried objects under the Born approximation, IEEE Trans. on Antennas and propagation, vol. 53, n. 6, pp. 1875-1887, 2005.

This paper is a classic because it proposed for the first time a systematic analysis of the role of the antenna configuration in subsurface prospecting.

 

Slaney, A. C. Kak and L. E. Larsen, Limitation of imaging with first order diffraction tomography, IEEE Trans. on Microwave Theory and Techniques, vol MTT-32, pp. 869-874, 1984.

This paper is a classic because it has been maybe the first one to expose a quantification of when a linear approximation (as that adopted in migration procedures) is valid.

 

Engheta, C. H. Papas and C. Elachi, Radiation Pattern of interfacial dipole antennas, Radio Science, vol. 17, n. 6, pp. 1557-1566, 1982.

This paper is a classic because it has been maybe the first one to calculate analytically the behavior of an Hertzian antenna put on the soil, in terms of both input impedance and radiation pattern.

 

C. Topp, J. L. Davis, A. P. Annan, Electromagnetic determination of soil water content: Measurements in coaxial transmission lines, Water Resources Research, vol. 16, n. 3, pp. 574-582, 1980.

This paper is a classic because it has been maybe the first one to expose an experimental relationship between the moist content and the dielectric permittivity in materials.

 

A. Schneider, Integral formulation for migration in two and three dimensions, Geophysics, vol. 43, n. 1, pp. 49-76, 1978.

This paper is a classic because it has introduced the migration in time domain (or Kirchhoff’s migration) for seismic data, then adopted also for GPR data.

  

H. Stolt, Migration by Fourier Transform, Geophysics, vol. 43,m n. 1, pp. 23-48, 1978.

This paper is a classic because it has introduced the migration in frequency domain (or Stolt’s migration) for seismic data, then adopted also for GPR data.

 

L. Robinson, W. B. Weirand and L. Yung, Location and recognition of discontinuities in dielectric media using synthetic RF pulses, Proc. of IEEE, vol. 62, n. 1 pp. 34-44, 1974.

This paper is a classic because it represents one of the first reported experiments performed with a stepped frequency system.