Calibration and field experiment of a C-band polarimetric scatterometer

Abstract

Presents the evaluation results of a full polarimetric C-band scatterometer system that has been designed and constructed at the Multimedia University, Malaysia. The system was tested at a football field. A metal sphere was used as the calibration target. Backscattering matrices of an 8" trihedral corner reflector and a 4"×8" dihedral corner reflector were measured. The dihedral was rotated at different angles to provide different sets of polarimetric data. The results were compared with the theoretical values to verify the effectiveness of the calibration technique. The external calibration and internal calibration procedures as well as the approach used in measuring the relative phase response are discussed