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@MISC{Liu:837598,
      author       = {Liu, T. and Klotzsche, A. and Pondkule, M. and Vereecken,
                      H. and van der Kruk, J. and Su, Y.},
      title        = {{E}stimation of subsurface cylindrical object properties
                      from {GPR} full-waveform inversion},
      address      = {Edinburgh},
      publisher    = {IEEE},
      reportid     = {FZJ-2017-06481},
      year         = {2017},
      note         = {Best Student Paper Award at the 9th International Workshop
                      on Advanced Ground Penetrating Radar},
      abstract     = {Precise radius estimation is of high interest for rebar and
                      pipe characterization but very challenging. In this work, we
                      present a novel 3D frequency-domain full-waveform inversion
                      (FWI) approach with which the geometrical information of
                      subsurface cylindrical objects and the dielectric properties
                      of the penetrating medium are simultaneously extracted from
                      ground penetrating radar (GPR) data. The presented FWI
                      strategy optimizes and updates phase- and amplitude-related
                      model parameters sequentially. The forward modeling step in
                      FWI is accomplished by using gprMax3D. The Shuffled Complex
                      Evolution (SCE) strategy is employed for the optimization
                      procedure. The experiment with synthetic data has provided a
                      precise reconstruction of the initial model.},
      cin          = {IBG-3},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)38},
      url          = {https://juser.fz-juelich.de/record/837598},
}