Laboratory measurements of polarimetric radar signatures of randomly distributed spherical and spheroidal scatterers at 30 GHz

Author

Tazaki, T. ; Tabuchi, H. ; Ikeda, Ken-ichi ; Oguchi, Toshiki ; Ito, Satoshi

Author_Institution

Dept. of Electr. & Electron. Eng., Kanto Gakuin Univ., Yokohama, Japan

Volume

147

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

8

Lastpage

12

Abstract

Laboratory measurements of the polarimetric radar parameters for large spherical and spheroidal water scatterers are performed at 30 GHz to investigate their dependence on the scatterer shape. Antenna beamwidth and polarisation state. The measurements are made under multiple scattering conditions. The measured linear and circular depolarisation ratios for the spherical scatterers agree well with the theoretically calculated ones. The cross-polar level of the circular polarisation due to the multiple scattering is very large compared with that of the linear polarisation. The measurements for the spheroidal scatterers show that the shape and orientation distributions significantly affect the cross-polar correlation coefficient

Keywords

electromagnetic wave polarisation; electromagnetic wave scattering; radar applications; radar polarimetry; 30 GHz; MM-wave scatterers; MM-wave scatterometer; SHF; antenna beamwidth; cross-polar correlation coefficient; cross-polar level; hydrometeors; laboratory measurements; measured circular depolarisation ratio; measured linear depolarisation ratio; multiple scattering conditions; orientation distribution; polarimetric radar signatures; polarisation state; randomly distributed spherical scatterer; randomly distributed spheroidal scatterer; remote sensing; scatterer shape; shape distribution; spherical water scatterers; spheroidal water scatterer;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:20000171

Filename

827186