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|Author(s):||Lorant A. Muth; Crystol William; Donald Morales; Timothy Conn;|
|Title:||Angular Errors in Polarimetric Radar Cross Section Calibration Using a Rotating Dihedral|
|Published:||October 30, 2005|
|Abstract:||We examine how accurately a radar cross section measurement system?s transmit and receive parameters can be determined by use of a rotating dihedral as the polarimetric calibration device. We derive expressions for the errors due to misalignment in the angle of rotation. We obtain expressions for the angles ?0,hv and ?0,vh for which the measured cross-polarization ratios of a target vanish. Since the theoretical crosspolarization ratio of a cylinder is 0, we can find the calibration bias-correction angles. We use simulated and real data to demonstrate the robustness of this bias-angle correction technique. We derive expressions for the uncertainty in the polarimetric system parameters.|
|Proceedings:||Antenna Measurements Techniques Association|
|Dates:||October 30-November 4, 2005|
|Keywords:||angular errors,calibration,polarimetric radar cross section,rotating dihedrals|