Title :
Backscattering from square plates illuminated with vertical polarization
Author :
Ross, R. Alexander
Author_Institution :
Integrated Defense Syst. (IDS), Bedford, MA, USA
Abstract :
The geometrical theory of diffraction is used to describe backscattering by a square flat plate as a function of aspect angle. When the plate is illuminated with vertical polarization, singly diffracted terms are augmented by a new doubly diffracted contribution that accounts for grazing phenomena. The latter term is obtained from a related analysis that describes bistatic scattering from a flat plate. Predictions are compared with numerical results from the method of moments for plates between 2 and 7 wavelengths on a side. The modified theory accurately predicts the radar cross section of square plates as small as 3 wavelengths on a side.
Keywords :
backscatter; electromagnetic wave scattering; geometrical theory of diffraction; method of moments; radar cross-sections; radar polarimetry; GTD; MoM; RCS prediction; aspect angle; bistatic backscattering; geometrical theory of diffraction; grazing phenomena; method of moment; radar cross section; square flat plate; vertical polarization; Backscatter; Electromagnetic diffraction; Electromagnetic scattering; Frequency measurement; Moment methods; Physical theory of diffraction; Polarization; Radar cross section; Radar scattering; Surface treatment; Geometrical theory of diffraction (GTD); grazing incidence; radar cross section (RCS); square flat plates;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2005.861506
