Synthetic aperture radar with dynamic metasurface antennas: A conceptual development

Michael Boyarsky, Timothy Sleasman, Laura Pulido-Mancera, Thomas Fromenteze, Andreas Pedross-Engel, Claire M. Watts, Mohammadreza F. Imani, Matthew S. Reynolds, David R. Smith

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

We investigate the application of dynamic metasurface antennas (DMAs) to synthetic aperture radar (SAR) systems. Metasurface antennas can generate a multitude of tailored electromagnetic waveforms from a physical platform that is low-cost, lightweight, and planar; these characteristics are not readily available with traditional SAR technologies, such as phased arrays and mechanically steered systems. We show that electronically tuned DMAs can generate steerable, directive beams for traditional stripmap and spotlight SAR imaging modes. This capability eliminates the need for mechanical gimbals and phase shifters, simplifying the hardware architecture of a SAR system. Additionally, we discuss alternative imaging modalities, including enhanced resolution stripmap and diverse pattern stripmap, which can achieve resolution on par with spotlight, while maintaining a large region-of-interest, as possible with stripmap. Further consideration is given to strategies for integrating metasurfaces with chirped pulse RF sources. DMAs are poised to propel SAR systems forward by offering a vast range of capabilities from a significantly improved physical platform.

Original languageEnglish (US)
Pages (from-to)A22-A36
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume34
Issue number5
DOIs
StatePublished - May 1 2017
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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