Experimental study of a polarization-rotating Van Atta array with reduced co-polarized radar cross-section

Author

Fujita, Masaharu ; Murakami, Chikage

Author_Institution

Tokyo Metropolitan Inst. of Technol., Japan

Volume

7

fYear

2003

fDate

21-25 July 2003

Firstpage

4503

Abstract

Fundamental experiment was conducted on a Van Atta array as a candidate of calibration target for airborne SAR. The problem of direct scattering from the elements was solved by giving a quarter-wavelength displacement between two sub-arrays. The result showed a good retrodirectivity with smooth reflection pattern as a function of the rotation angle and polarization rotating characteristic, while the directly backscattered waves were suppressed well.

Keywords

airborne radar; backscatter; calibration; electromagnetic wave scattering; geophysical equipment; microwave antenna arrays; radar antennas; radar cross-sections; radar polarimetry; synthetic aperture radar; L-band frequency; airborne SAR; calibration target; directly backscattered waves; polarization rotating properties; polarization-rotating Van Atta array; quarter-wavelength displacement; reduced copolarized radar cross-section; retrodirectivity; rotation angle; Antenna arrays; Calibration; Polarization; Radar cross section; Radar scattering; Radio frequency; Reflection; Reflector antennas; Spaceborne radar; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International

Print_ISBN

0-7803-7929-2

Type

conf

DOI

10.1109/IGARSS.2003.1295561

Filename

1295561