Title :
Time domain wave-oriented data processing of scattering by truncated periodic strip gratings
Author :
Kralj, D. ; McClure, M. ; Carin, L. ; Felsen, L.B.
Author_Institution :
Dept. of Electr. Eng., Polytechnic Univ., Brooklyn, NY, USA
Abstract :
In a companion paper (see ibid., p.668, 1994), we have investigated wave-oriented processing techniques which extract from frequency domain (FD) scattering data for truncated periodic strip gratings the wave phenomenology that ties features in data to scattering mechanisms responsible for these features. The present paper explores time domain (TD) wave-oriented processing techniques for scattering by such gratings due to a pulsed incident plane wave. Time (t)-frequency (/spl omega/) phase space distributions implemented via windowed transforms now extract from the TD data new phenomenologies which are interpreted in terms of novel TD Floquet modes (FM) and TD-FM edge diffractions from the grating aperture truncations. This is in agreement with the previously developed analytic TD scattering models.<>
Keywords :
conductors (electric); diffraction gratings; electromagnetic wave scattering; geometrical theory of diffraction; signal processing; time-domain analysis; EM wave scattering; GTD; TD Floquet modes; TD scattering models; TD-FM edge diffractions; grating aperture truncations; pulsed incident plane wave; time domain wave-oriented data processing; time-frequency phase space distributions; truncated periodic strip gratings; windowed transforms; Cutoff frequency; Data engineering; Data mining; Data processing; Diffraction; Dispersion; Frequency domain analysis; Gratings; Light scattering; Strips;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.408000
