TY - JOUR
T1 - Application of range migration algorithms to imaging with a dynamic metasurface antenna
AU - Pulido-Mancera, Laura
AU - Fromenteze, Thomas
AU - Sleasman, Timothy
AU - Boyarsky, Michael
AU - Imani, Mohammadreza F.
AU - Reynolds, Matthew
AU - Smith, David
N1 - Publisher Copyright:
© 2016 Optical Society of America.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - Dynamic metasurface antennas are planar structures that exhibit remarkable capabilities in controlling electromagnetic wavefronts, advantages that are particularly attractive for microwave imaging. These antennas exhibit strong frequency dispersion and produce rapidly varying radiation patterns. Such behavior presents unique challenges for integration with conventional imaging algorithms. We adapt the range migration algorithm (RMA) for use with dynamic metasurfaces and propose a preprocessing step that ultimately allows for expression of measurements in the spatial frequency domain, from which the fast Fourier transform can efficiently reconstruct the scene. Numerical studies illustrate imaging performance using conventional methods and the adapted RMA, demonstrating that the RMA can reconstruct images with comparable quality in a fraction of the time. The algorithm can be extended to a broad class of complex antennas for application in synthetic aperture radar and MIMO imaging.
AB - Dynamic metasurface antennas are planar structures that exhibit remarkable capabilities in controlling electromagnetic wavefronts, advantages that are particularly attractive for microwave imaging. These antennas exhibit strong frequency dispersion and produce rapidly varying radiation patterns. Such behavior presents unique challenges for integration with conventional imaging algorithms. We adapt the range migration algorithm (RMA) for use with dynamic metasurfaces and propose a preprocessing step that ultimately allows for expression of measurements in the spatial frequency domain, from which the fast Fourier transform can efficiently reconstruct the scene. Numerical studies illustrate imaging performance using conventional methods and the adapted RMA, demonstrating that the RMA can reconstruct images with comparable quality in a fraction of the time. The algorithm can be extended to a broad class of complex antennas for application in synthetic aperture radar and MIMO imaging.
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U2 - 10.1364/JOSAB.33.002082
DO - 10.1364/JOSAB.33.002082
M3 - Article
AN - SCOPUS:84991227329
SN - 0740-3224
VL - 33
SP - 2082
EP - 2092
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 10
ER -