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@ARTICLE{Jonard:172371,
      author       = {Jonard, Francois and Weihermüller, Lutz and Schwank, Mike
                      and Jadoon, K. Z. and Vereecken, Harry and Lambot,
                      Sébastien},
      title        = {{E}stimation of the hydraulic properties of a sand using
                      ground-based passive and active microwave remote sensing},
      journal      = {IEEE transactions on geoscience and remote sensing},
      volume       = {53},
      number       = {6},
      issn         = {0018-9413},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {FZJ-2014-05851},
      pages        = {3095 - 3109},
      year         = {2015},
      abstract     = {In this paper, we experimentally analyzed the feasibility
                      of estimating soil hydraulic properties from 1.4 GHz
                      radiometer and 0.8–2.6 GHz ground-penetrating radar (GPR)
                      data. Radiometer and GPR measurements were performed above a
                      sand box, which was subjected to a series of vertical water
                      content profiles in hydrostatic equilibrium with a water
                      table located at different depths. A coherent radiative
                      transfer model was used to simulate brightness temperatures
                      measured with the radiometer. GPR data were modeled using
                      full-wave layered medium Green's functions and an intrinsic
                      antenna representation. These forward models were inverted
                      to optimally match the corresponding passive and active
                      microwave data. This allowed us to reconstruct the water
                      content profiles, and thereby estimate the sand water
                      retention curve described using the van Genuchten model.
                      Uncertainty of the estimated hydraulic parameters was
                      quantified using the Bayesian-based DREAM algorithm. For
                      both radiometer and GPR methods, the results were in close
                      agreement with in situ time-domain reflectometry (TDR)
                      estimates. Compared with radiometer and TDR, much smaller
                      confidence intervals were obtained for GPR, which was
                      attributed to its relatively large bandwidth of operation,
                      including frequencies smaller than 1.4 GHz. These results
                      offer valuable insights into future potential and emerging
                      challenges in the development of joint analyses of passive
                      and active remote sensing data to retrieve effective soil
                      hydraulic properties.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255) / 255 - Terrestrial Systems: From Observation to
                      Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000351063800009},
      doi          = {10.1109/TGRS.2014.2368831},
      url          = {https://juser.fz-juelich.de/record/172371},
}