Polarimetric scattering from natural surfaces at 225 GHz

Author

Mead, James B. ; Langlois, Philip M. ; Chang, Paul S. ; McIntosh, Robert E.

Author_Institution

Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA

Volume

39

Issue

9

fYear

1991

fDate

9/1/1991 12:00:00 AM

Firstpage

1405

Lastpage

1411

Abstract

Polarimetric radar measurement at 225 GHz which demonstrate that the normalized Mueller matrix may be approximated in terms of a single parameter are presented. The depolarization ratio, defined as the ratio of cross-polarized to co-polarized normalized radar cross section, is shown to accurately predict backscatter from vegetation (trees and grass), as well as scattering from terrain at low incidence angles (snowcover and sand). The depolarization ratio also predicts the standard deviation of the scattered field ellipse parameters

Keywords

backscatter; electromagnetic wave scattering; polarimetry; remote sensing by radar; 225 GHz; EHF; backscatter; depolarization ratio; electromagnetic scattering; grass; microwave scattering; natural surfaces; normalized Mueller matrix; polarimetric radar measurements; radar cross section; sand; snowcover; terrain; trees; vegetation; Electromagnetic scattering; Electromagnetic wave polarization; Phase measurement; Radar cross section; Radar measurements; Radar scattering; Rayleigh scattering; Scattering parameters; Vegetation mapping; Wavelength measurement;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.99051

Filename

99051