TY - JOUR
T1 - Resolution of the frequency diverse metamaterial aperture imager
AU - Yurduseven, Okan
AU - Imani, Mohammadreza F.
AU - Odabasi, Hayrettin
AU - Gollub, Jonah
AU - Lipworth, Guy
AU - Rose, Alec
AU - Smith, David R.
N1 - Publisher Copyright:
© 2015, Electromagnetics Academy. All rights reserved.
PY - 2015
Y1 - 2015
N2 - The resolution of a frequency diverse compressive metamaterial aperture imager is investigated. The aperture consists of a parallel plate waveguide, in which an array of complementary, resonant metamaterial elements is patterned into one of the plates. Microwaves injected into the waveguide leak out through the resonant metamaterial elements, forming a spatially diverse waveform at the scene. As the frequency is scanned, the waveforms change, such that scene information can be encoded onto a set of frequency measurements. The compressive nature of the metamaterial imager enables image reconstruction from a significantly reduced number of measurements. We characterize the resolution of this complex aperture by studying the simulated point spread function (PSF) computed using different image reconstruction techniques. We compare the imaging performance of the system with that expected from synthetic aperture radar (SAR) limits.
AB - The resolution of a frequency diverse compressive metamaterial aperture imager is investigated. The aperture consists of a parallel plate waveguide, in which an array of complementary, resonant metamaterial elements is patterned into one of the plates. Microwaves injected into the waveguide leak out through the resonant metamaterial elements, forming a spatially diverse waveform at the scene. As the frequency is scanned, the waveforms change, such that scene information can be encoded onto a set of frequency measurements. The compressive nature of the metamaterial imager enables image reconstruction from a significantly reduced number of measurements. We characterize the resolution of this complex aperture by studying the simulated point spread function (PSF) computed using different image reconstruction techniques. We compare the imaging performance of the system with that expected from synthetic aperture radar (SAR) limits.
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U2 - 10.2528/PIER14113002
DO - 10.2528/PIER14113002
M3 - Article
AN - SCOPUS:84921527622
SN - 1070-4698
VL - 150
SP - 97
EP - 107
JO - Progress in Electromagnetics Research
JF - Progress in Electromagnetics Research
ER -