A new calibration algorithm of wide-band polarimetric measurement system

Author

Chen, Tzong-Jyh ; Chu, Tah-Hsiung ; Chen, Fu-Chiarng

Author_Institution

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

Volume

39

Issue

8

fYear

1991

fDate

8/1/1991 12:00:00 AM

Firstpage

1188

Lastpage

1192

Abstract

The principle and experimental results of a new self-consistent calibration algorithm for a wideband polarimetric scattering measurement system are presented. The calibration targets include a flat plate, a dihedral corner reflector, and a rotated dihedral corner reflector. The rotation angle of the third calibrator can be derived in the calibration process and used to verify the calibration performance. Experimental results show that the calculated rotation angle of the third calibrator over the operation bandwidth is in good agreement with its actual angle, hence it provides a self-consistent parameter of the calibration algorithm. Based on the signal-to-noise consideration, an optimal rotation angle for a dihedral corner reflector is found to be 22.5°. This calibration technique is also useful in characterizing the frequency and polarization responses of dual-polarization antennas

Keywords

calibration; electromagnetic wave polarisation; electromagnetic wave scattering; microwave antennas; microwave measurement; polarimetry; dihedral corner reflector; dual-polarization antennas; flat plate; frequency response; microwave measurement; polarisation response; rotated dihedral corner reflector; self-consistent calibration algorithm; wideband polarimetric scattering measurement system; Antenna measurements; Calibration; Frequency; Laboratories; Polarization; Radar scattering; Receiving antennas; Reflector antennas; Transmitting antennas; Wideband;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.97354

Filename

97354