% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Meles:201157,
      author       = {Meles, Giovanni and Greenhalgh, Stewart and der Kruk, Jan
                      van and Green, Alan and Maurer, Hansruedi},
      title        = {{T}aming the non-linearity problem in {GPR} full-waveform
                      inversion for high contrast media},
      journal      = {Journal of applied geophysics},
      volume       = {78},
      issn         = {0926-9851},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2015-03462},
      pages        = {31 - 43},
      year         = {2012},
      abstract     = {We present a new algorithm for the inversion of
                      full-waveform ground-penetrating radar (GPR) data. It is
                      designed to tame the non-linearity issue that afflicts
                      inverse scattering problems, especially in high contrast
                      media. We first investigate the limitations of current
                      full-waveform time-domain inversion schemes for GPR data and
                      then introduce a much-improved approach based on a combined
                      frequency-time-domain analysis. We show by means of several
                      synthetic tests and theoretical considerations that local
                      minima trapping (common in full bandwidth time-domain
                      inversion) can be avoided by starting the inversion with
                      only the low frequency content of the data. Resolution
                      associated with the high frequencies can then be achieved by
                      progressively expanding to wider bandwidths as the
                      iterations proceed. Although based on a frequency analysis
                      of the data, the new method is entirely implemented by means
                      of a time-domain forward solver, thus combining the benefits
                      of both frequency-domain (low frequency inversion conveys
                      stability and avoids convergence to a local minimum; whereas
                      high frequency inversion conveys resolution) and time-domain
                      methods (simplicity of interpretation and recognition of
                      events; ready availability of FDTD simulation tools).},
      cin          = {IBG-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246) / 255 - Terrestrial Systems:
                      From Observation to Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000301631200005},
      doi          = {10.1016/j.jappgeo.2011.12.001},
      url          = {https://juser.fz-juelich.de/record/201157},
}