Calibration of wide-band polarimetric measurement system using three perfectly polarization-isolated calibrators

Author

Chen, Tzong-Jyh ; Chu, Tah-Hsiung

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

40

Issue

12

fYear

1992

fDate

12/1/1992 12:00:00 AM

Firstpage

1573

Lastpage

1577

Abstract

An improved calibration method for a wideband polarimetric measurement system using three partly unknown, perfectly polarization-isolated calibrators is presented, with experimental results measured from 7 to 17 GHz. The cross-polarized information is provided by rotating the third calibrator to an arbitrary angle with respect to the radar range direction. Only the copolarization terms in the polarimetric scattering matrix (PSM) of the first calibrator are required to be specified. The copolarized scattering properties, including the range information of the other two calibrators and the rotation angle of the third calibrator, can be acquired in the calibration process and used to verify the calibration accuracy

Keywords

calibration; microwave measurement; polarimetry; radar applications; 7 to 17 GHz; SHF; calibration method; copolarization terms; cross-polarized information; perfectly polarization-isolated calibrators; polarimetric scattering matrix; radar polarimetry; radar range direction; rotation angle; wideband polarimetric measurement system; Antennas and propagation; Boundary conditions; Calibration; Conductors; Electromagnetic propagation; Magnetic field measurement; Magnetic fields; Polarization; Radar scattering; Wideband;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.204751

Filename

204751