Publications [#280154] of David J. Brady
- Mrozack, A; Heimbeck, M; Marks, DL; Richard, J; Everitt, HO; Brady, DJ, Adaptive millimeter-wave synthetic aperture imaging for compressive sampling of sparse scenes.,
Optics Express, vol. 22 no. 11
pp. 13515-13530 [doi]
(last updated on 2019/11/21)
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.