Title :
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
fDate :
9/1/1991 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
