% 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{Fluhrer:908081,
      author       = {Fluhrer, Anke and Jagdhuber, Thomas and Tabatabaeenejad,
                      Alireza and Alemohammad, Hamed and Montzka, Carsten and
                      Friedl, Peter and Forootan, Ehsan and Kunstmann, Harald},
      title        = {{R}emote {S}ensing of {C}omplex {P}ermittivity and
                      {P}enetration {D}epth of {S}oils {U}sing {P}-{B}and {SAR}
                      {P}olarimetry},
      journal      = {Remote sensing},
      volume       = {14},
      number       = {12},
      issn         = {2072-4292},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2022-02360},
      pages        = {2755},
      year         = {2022},
      abstract     = {A P-band SAR moisture estimation method is introduced for
                      complex soil permittivity and penetration depth estimation
                      using fully polarimetric P-band SAR signals. This method
                      combines eigen- and model-based decomposition techniques for
                      separation of the total backscattering signal into three
                      scattering components (soil, dihedral, and volume). The
                      incorporation of a soil scattering model allows for the
                      first time the estimation of complex soil permittivity and
                      permittivity-based penetration depth. The proposed method
                      needs no prior assumptions on land cover characteristics and
                      is applicable to a variety of vegetation types. The
                      technique is demonstrated for airborne P-band SAR
                      measurements acquired during the AirMOSS campaign
                      (2012–2015). The estimated complex permittivity agrees
                      well with climate and soil conditions at different
                      monitoring sites. Based on frequency and permittivity,
                      P-band penetration depths vary from 5 cm to 35 cm. This
                      value range is in accordance with previous studies in the
                      literature. Comparison of the results is challenging due to
                      the sparsity of vertical soil in situ sampling. It was found
                      that the disagreement between in situ measurements and
                      SAR-based estimates originates from the discrepancy between
                      the in situ measuring depth of the top-soil layer (0–5 cm)
                      and the median penetration depth of the P-band waves
                      (24.5–27 cm).},
      cin          = {IBG-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000816142600001},
      doi          = {10.3390/rs14122755},
      url          = {https://juser.fz-juelich.de/record/908081},
}