Application of range migration algorithms to imaging with a dynamic metasurface antenna

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Pulido-Mancera, L; Fromenteze, T; Sleasman, T; Boyarsky, M; Imani, MF; Reynolds, M; Smith, D

Published Date

  • October 1, 2016

Published In

Volume / Issue

  • 33 / 10

Start / End Page

  • 2082 - 2092

Electronic International Standard Serial Number (EISSN)

  • 1520-8540

International Standard Serial Number (ISSN)

  • 0740-3224

Digital Object Identifier (DOI)

  • 10.1364/JOSAB.33.002082

Citation Source

  • Scopus