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@ARTICLE{Lambot:133496,
      author       = {Lambot, Sebastien and Andre, Frederic and Slob, Evert and
                      Vereecken, Harry},
      title        = {{E}ffect of antenna-medium coupling in the analysis of
                      ground-penetrating radar data},
      journal      = {Near surface geophysics},
      volume       = {10},
      number       = {6},
      issn         = {1569-4445},
      address      = {Houten},
      publisher    = {EAGE},
      reportid     = {FZJ-2013-01934},
      pages        = {631 - 639},
      year         = {2012},
      note         = {This research was supported by the Fonds de la Recherche
                      Scientifique (FNRS, Belgium) and the DIGISOIL project
                      financed by the European Commission under the 7th Framework
                      Programme for Research and Technological Development, Area
                      'Environment', Activity 6.3 'Environmental Technologies'.},
      abstract     = {Physically-based ground-penetrating radar (GPR) data
                      processing is essential for quantitative characterization of
                      soils and materials. A novel near-field GPR antenna model
                      coupled with layered media Green's functions was used to
                      investigate the effect of antenna-medium coupling in the
                      analysis of GPR data. The radar antennas are modelled using
                      an equivalent set of infinitesimal electric dipoles and
                      characteristic, frequency-dependent, global reflection and
                      transmission coefficients. These coefficients determine
                      through plane wave decomposition, wave propagation between
                      the radar reference plane, point sources and field points.
                      We calibrated an actual commercial 400 MHz time-domain
                      antenna, from which synthetic GPR data sets were generated.
                      We observed that, depending on the model configuration,
                      antenna effects may affect the topography of the objective
                      function in full-waveform inverse problems. In addition,
                      antenna-medium coupling has a significant impact on the
                      medium surface reflection, whether in terms of amplitude or
                      propagation time (which usually defines the so-called time
                      zero). We also showed that an effective source cannot be
                      used for simulating near-field radar data as the
                      antenna-medium coupling strongly depends on medium
                      properties. In this respect, numerical experiments
                      demonstrated promising perspectives for simultaneous
                      estimates of medium permittivity and conductivity from
                      antenna-medium coupling.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246)},
      pid          = {G:(DE-HGF)POF2-246},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000312975800016},
      doi          = {10.3997/1873-0604.2012005},
      url          = {https://juser.fz-juelich.de/record/133496},
}