The SARSense Campaign: Air- and Space-Borne C- and L-Band SAR for the Analysis of Soil and Plant Parameters in Agriculture
2021
Mengen, David | Montzka, Carsten | Jagdhuber, Thomas | Fluhrer, Anke | Brogi, Cosimo | Baum, Stephani | Schüttemeyer, Dirk | Bayat, Bagher | Bogena, Heye | Coccia, Alex | Masalias, Gerard | Trinkel, Verena | Jakobi, Jannis | Jonard, François | Ma, Yueling | Mattia, Francesco | Palmisano, Davide | Rascher, Uwe | Satalino, Giuseppe | Schumacher, Maike | Koyama, Christian | Schmidt, Marius | Vereecken, H. (Harry)
With the upcoming L-band Synthetic Aperture Radar (SAR) satellite mission Radar Observing System for Europe L-band SAR (ROSE-L) and its integration into existing C-band satellite missions such as Sentinel-1, multi-frequency SAR observations with high temporal and spatial resolution will become available. The SARSense campaign was conducted between June and August 2019 to investigate the potential for estimating soil and plant parameters at the agricultural test site in Selhausen (Germany). It included C- and L-band air- and space-borne observations accompanied by extensive in situ soil and plant sampling as well as unmanned aerial system (UAS) based multispectral and thermal infrared measurements. In this regard, we introduce a new publicly available SAR data set and present the first analysis of C- and L-band co- and cross-polarized backscattering signals regarding their sensitivity to soil and plant parameters. Results indicate that a multi-frequency approach is relevant to disentangle soil and plant contributions to the SAR signal and to identify specific scattering mechanisms associated with the characteristics of different crop type, especially for root crops and cereals.
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