Metamaterial microwave holographic imaging system

John Hunt, Jonah Gollub, Tom Driscoll, Guy Lipworth, Alex Mrozack, Matthew S. Reynolds, David J. Brady, David R. Smith

Research output: Contribution to journalArticlepeer-review

124 Scopus citations

Abstract

We demonstrate a microwave imaging system that combines advances in metamaterial aperture design with emerging computational imaging techniques. The flexibility inherent to guided-wave, complementary metamaterials enables the design of a planar antenna that illuminates a scene with dramatically varying radiation patterns as a function of frequency. As frequency is swept over the K-band (17.5-26.5 GHz), a sequence of pseudorandom radiation patterns interrogates a scene. Measurements of the return signal versus frequency are then acquired and the scene is reconstructed using computational imaging methods. The low-cost, frequency-diverse static aperture allows three-dimensional images to be formed without mechanical scanning or dynamic beam-forming elements. The metamaterial aperture is complementary to a variety of computational imaging schemes, and can be used in conjunction with other sensors to form a multifunctional imaging platform. We illustrate the potential of multisensor fusion by integrating an infrared structured-light and optical image sensor to accelerate the microwave scene reconstruction and to provide a simultaneous visualization of the scene.

Original languageEnglish (US)
Pages (from-to)2109-2119
Number of pages11
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume31
Issue number10
DOIs
StatePublished - Oct 1 2014
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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