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Proceedings Paper

Three-dimensional radiometric aperture synthesis microscopy for security screening
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Paper Abstract

The three dimensional (3D) aperture synthesis imaging technique investigated here is a generalisation of the classic twodimensional radio astronomy technique with refinements for the near-field so it can be applied a personnel security screening portal. This technique can be viewed as a novel form of diffraction emission tomography and extends previous 3D aperture synthesis imaging research using matrix inversion techniques [1]. Simulations using three-dimensional Fourier transforms to create three-dimensional images from simulated three-dimensional visibility functions illustrate the Abbe microscopy resolution should be achievable in three dimensions simultaneously in a single sensor. The field-of-view is demonstrated to be limited by Fresnel scale effects and a means to over coming this by processing sub-sets of local visibility functions with different phase centres throughout the imaging volume is presented. The applications of this technique to a full 3D imaging security screening portal is explored and a route to extending simulation software for market driven imaging scenarios is discussed.

Paper Details

Date Published: 21 October 2014
PDF: 9 pages
Proc. SPIE 9252, Millimetre Wave and Terahertz Sensors and Technology VII, 925204 (21 October 2014); doi: 10.1117/12.2068202
Show Author Affiliations
Neil A. Salmon, Manchester Metropolitan Univ. (United Kingdom)
Nick Bowring, Manchester Metropolitan Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9252:
Millimetre Wave and Terahertz Sensors and Technology VII
Neil Anthony Salmon; Eddie L. Jacobs, Editor(s)

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