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@INPROCEEDINGS{Steinbeck:903669,
      author       = {Steinbeck, Leon and Mester, Achim and Heinen, Stefan and
                      Zimmermann, Egon and Klotzsche, Anja and van Waasen, Stefan},
      title        = {{C}alibration concept for a {GPR} monitoring system and
                      methods for arrival time picking},
      reportid     = {FZJ-2021-05318},
      year         = {2021},
      abstract     = {Calibration of ground penetrating radar (GPR) measurement
                      systems isindispensable to enable quantitative and high
                      resolution data analysisespecially for high resolution soil
                      research as well as inversion approachesfor a wide range of
                      applications. This work presents a concept for an in
                      situcalibration of GPR monitoring systems which enables to
                      perform acalibration that is not solely based on signals
                      traveling in air. A classicalcalibration via signals
                      traveling in air is not feasible in our setup, since
                      thesystem is permanently positioned around a test specimen,
                      e.g. a soil column.The calibration concept is based on the
                      ability to use each antenna as bothtransmitter or receiver
                      and, thereby, perform reciprocal measurements.Initial test
                      measurements indicate the reliability of reciprocal
                      measurementsfor an in situ calibration of our monitoring
                      system with relative accuracies ofdown to 2 ps.},
      month         = {Dec},
      date          = {2021-12-01},
      organization  = {11th International Workshop on
                       Advanced Ground Penetrating Radar,
                       Valetta (Malta), 1 Dec 2021 - 4 Dec
                       2021},
      subtyp        = {After Call},
      cin          = {ZEA-2 / IBG-3},
      cid          = {I:(DE-Juel1)ZEA-2-20090406 / 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)6},
      url          = {https://juser.fz-juelich.de/record/903669},
}