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@ARTICLE{Minet:15984,
      author       = {Minet, J. and Wahyudi, A. and Bogaert, P. and Vanclooster,
                      M. and Lambot, S.},
      title        = {{M}apping shallow soil moisture profiles at the field scale
                      using full-waveform inversion of ground penetrating radar
                      data},
      journal      = {Geoderma},
      volume       = {161},
      issn         = {0016-7061},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-15984},
      year         = {2011},
      note         = {The research presented in this paper was funded by the
                      Belgian Science Policy Office in the frame of the Stereo 11
                      programme project SR/00/100 (HYDRASENS), 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," and the Fonds de la Recherche Scientifique
                      (FNRS), Belgium. We thank Faycal Rejiba for his constructive
                      review of the paper. Maxime Dupriez is acknowledged for the
                      field assistance during the field campaign, as well as Guido
                      Rentmeesters for the GPR platform construction. Access to
                      the field was given by Christian Rieulaux, farmer at
                      Walhain-St-Paul.},
      abstract     = {Full-waveform inversions were applied to retrieve surface,
                      two-layered and continuous soil moisture profiles from
                      ground penetrating radar (GPR) data acquired in an 11-ha
                      agricultural field situated in the loess belt area in
                      central Belgium. The radar system consisted of a vector
                      network analyzer combined with an off-ground horn antenna
                      operating in the frequency range 200-2000 MHz. The GPR
                      system was computer controlled and synchronized with a
                      differential GPS for real-time data acquisition. Several
                      inversion strategies were also tested using numerical
                      experiments, which in particular demonstrated the
                      potentiality to reconstruct simplified two-layered
                      configurations from more complex, continuous dielectric
                      profiles as prevalent in the environment. The surface soil
                      moisture map obtained assuming a one-layered model showed a
                      global moisture pattern mainly explained by the topography
                      while local moisture patterns indicated a line effect.
                      Two-layered and profile inversions provided consistent
                      estimates with respect to each other and field observations,
                      showing significant moisture increases with depth. However,
                      some discrepancies were observed between the measured and
                      modeled GPR data in the higher frequency ranges, mainly due
                      to surface roughness effects which were not accounted for.
                      The proposed GPR method and inversion strategies showed
                      great promise for high-resolution, real-time mapping of soil
                      moisture at the field scale. (C) 2011 Elsevier B.V. All
                      rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Soil Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000288474300013},
      doi          = {10.1016/j.geoderma.2010.12.023},
      url          = {https://juser.fz-juelich.de/record/15984},
}