TY - GEN
T1 - A Beam Summation Scheme for Ultra-wideband RCS Calculations in the High-frequency Regime
AU - Chopde, Pranav
AU - Heyman, Ehud
AU - Boag, Amir
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - An ultra-wideband (UWB) Gaussian beam (GB) summation scheme for calculating the radar cross section (RCS) of arbitrary shaped scatterers is introduced. To allow high frequency approximations, the scatterers are assumed to be piecewise-smooth comprising surfaces with radii of curvature much larger than the wavelength. The formulation is based on the windowed Fourier transform (WFT) frame theory applied to the incident wave on the expansion plane. The incident plane wave is expanded into a frequency independent iso-diffracting Gaussian beam (ID-GB) lattice, emerging from the phase-space (PS) lattice. The choice of iso-diffracting Gaussian window provides the optimal frame representation for all frequencies, thus generating stable and localized expansion coefficients. Furthermore, these beams are fully characterized by frequency independent parameters hence need to be traced and calculated once for all the frequencies in the band. The field of each GB is then tracked through multiple reflections by multiple surfaces within the scatterer domain until the beam emerges out and propagates to the scattering zone, where the beam contributions are summed up to obtain the scattered field, hence eventually radar cross section.
AB - An ultra-wideband (UWB) Gaussian beam (GB) summation scheme for calculating the radar cross section (RCS) of arbitrary shaped scatterers is introduced. To allow high frequency approximations, the scatterers are assumed to be piecewise-smooth comprising surfaces with radii of curvature much larger than the wavelength. The formulation is based on the windowed Fourier transform (WFT) frame theory applied to the incident wave on the expansion plane. The incident plane wave is expanded into a frequency independent iso-diffracting Gaussian beam (ID-GB) lattice, emerging from the phase-space (PS) lattice. The choice of iso-diffracting Gaussian window provides the optimal frame representation for all frequencies, thus generating stable and localized expansion coefficients. Furthermore, these beams are fully characterized by frequency independent parameters hence need to be traced and calculated once for all the frequencies in the band. The field of each GB is then tracked through multiple reflections by multiple surfaces within the scatterer domain until the beam emerges out and propagates to the scattering zone, where the beam contributions are summed up to obtain the scattered field, hence eventually radar cross section.
KW - Gaussian beam
KW - Radar cross section
KW - Wave scattering
UR - http://www.scopus.com/inward/record.url?scp=85123732252&partnerID=8YFLogxK
U2 - 10.1109/COMCAS52219.2021.9629049
DO - 10.1109/COMCAS52219.2021.9629049
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AN - SCOPUS:85123732252
T3 - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
SP - 47
EP - 50
BT - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
Y2 - 1 November 2021 through 3 November 2021
ER -