Title :
Calibration of polarimetric radar system using three perfectly polarization-isolated calibrators
Author :
Tzong-Jyh Chen ; Tah-Hsiung Chu
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The calibration method of T.J. Chen et al. (see IEEE, Trans. Antennas Propag., no.8, p.1188, 1991) is generalized in such a manner that the requirement that each polarization-isolated calibrator have the same copolarized RCS (radar cross section) is not needed. Only the copolarized terms in the polarimetric scattering matrix of the first calibrator are required. The range and copolarized RCSs of the other two calibrators and the rotation angle of the third calibrator can be derived in the calibration process and used to verify the calibration. Measurement results of the copolarization ratio of a conducting cylinder with a diameter of 2.54 cm and a length of 128.5 cm are shown.<>
Keywords :
S-matrix theory; calibration; electromagnetic wave polarisation; radar applications; radar cross-sections; radar systems; 128.5 cm; 2.54 cm; conducting cylinder; copolarization ratio; copolarized RCS; copolarized terms; diameter; length; measurement results; polarimetric radar system; polarimetric scattering matrix; polarisation isolated calibrators; radar cross section; range; rotation angle; Antenna measurements; Calibration; Equations; Polarization; Radar antennas; Radar cross section; Radar polarimetry; Radar scattering; Receiving antennas; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221874
