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

TitleAdaptive millimeter-wave synthetic aperture imaging for compressive sampling of sparse scenes.
Publication TypeJournal Article
Year of Publication2014
AuthorsA Mrozack, M Heimbeck, DL Marks, J Richard, HO Everitt, and DJ Brady
JournalOptics Express
Volume22
Start Page13515
Issue11
Pagination13515 - 13530
Date Published06/2014
Abstract

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.

DOI10.1364/oe.22.013515
Short TitleOptics Express