Adaptive millimeter-wave synthetic aperture imaging for compressive sampling of sparse scenes.

We apply adaptive sensing techniques to the problem of locating sparse metallic scatterers using high-resolution, frequency modulated continuous wave W-band RADAR. Using a single detector, a frequency stepped source, and a lateral translation stage, inverse synthetic aperture RADAR reconstruction techniques are used to search for one or two wire scatterers within a specified range, while an adaptive algorithm determined successive sampling locations. The two-dimensional location of each scatterer is thereby identified with sub-wavelength accuracy in as few as 1/4 the number of lateral steps required for a simple raster scan. The implications of applying this approach to more complex scattering geometries are explored in light of the various assumptions made.

Full Text

Duke Authors

Cited Authors

  • Mrozack, A; Heimbeck, M; Marks, DL; Richard, J; Everitt, HO; Brady, DJ

Published Date

  • June 2014

Published In

Volume / Issue

  • 22 / 11

Start / End Page

  • 13515 - 13530

PubMed ID

  • 24921545

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.22.013515

Language

  • eng