Translator Disclaimer
12 October 2010 A sub-millimeter wave line scanning imager
Author Affiliations +
In this paper, the design and implementation of a sub-millimeter line scanning imager using a novel imageforming device is described. The system consists of a coherent illuminator, an optical system, an image plane mask, and a coherent detector. The image plane mask is formed by making a sequence of holes along a constant radius of a metal disk. Spinning the disk scans the holes through the image formed on it. A detector placed behind the spinning disk collects radiation passing through the holes. The holes are arranged in a pseudorandom pattern. At each detector sample time, energy from a different pattern of holes is collected. A rigorous electromagnetic analysis shows that, for a certain minimum size and spacing of holes and certain disk thicknesses, these measurements constitute a linear measurement of the energy in the image formed on the disk. Using techniques reminiscent of those used in compressive sensing, the image is then reconstructed by applying an inverse linear matrix transform to these measurements. We show how simulation can be used to optimize the design of the disk. We demonstrate a laboratory version of this device and discuss future efforts to systematize it. Extensions to full two-dimensional imaging are also discussed.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Orges Furxhi and Eddie L. Jacobs "A sub-millimeter wave line scanning imager", Proc. SPIE 7837, Millimetre Wave and Terahertz Sensors and Technology III, 78370D (12 October 2010);


A millimeter wave focal plane array imager
Proceedings of SPIE (November 30 2017)
Large-aperture passive millimeter-wave pushbroom camera
Proceedings of SPIE (August 21 2001)
Developments in PMMW and THz imaging
Proceedings of SPIE (December 08 2004)
A sub-millimeter wave line imaging device
Proceedings of SPIE (April 27 2010)

Back to Top