Synergies Between GNSS-R and Radiometer Stokes Parameters Seen From SMAP (opens in new tab)

This work presents the first time- and space-collocated comparison between Stokes parameters from radiometric emission and L2 global navigation satellite system (GNSS)-R forward scattering, using data from the soil moisture active passive (SMAP) radiometer and SMAP-reflectometer. Radiometer ( $\boldsymbol {I},\boldsymbol {Q}$ , $\boldsymbol {U}$ , and $\boldsymbol {V}$ ) and reflectometer ( $\boldsymbol {S}_{0}$ , $\boldsymbol {S}_{1}$ , $\boldsymbol {S}_{2}$ , and $\boldsymbol {S}_{3}$ ) par...