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Proceedings Paper

An all electronic passive millimetre wave imaging system
Author(s): Neil A. Salmon; John Beale; Andy Beard; Mike Dean; Steve Hayward; Paul Hickling; Ser T. Chiw; Hooshang Ghafouri-Shiraz; Peter Hall; Rod Macpherson; Rob Lewis; Alan H. Lettington; Dennis Dunn
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Paper Abstract

The need to develop passive millimetre wave imaging systems which have better spatial resolution and sensitivity, to offer powerful discrimination capabilities, is great. On the other hand, many deployment scenarios dictate the system footprint to be smaller than that of existing imagers. This dilemma may be resolved by replacing the bulky quasi-optics of existing imaging systems with two dimensional antenna arrays and electronic processors. This paper discusses initial design work for a demonstrator of an all electronic passive millimetre wave imager. This approach to the all electronic imaging system, endeavours to create ultimately an 'imager skin', which has essentially a two dimensional architecture, the minimum requirement for the collection of millimetre wave radiation for imaging. The physics of the imaging process and possible routes to electronic imaging are discussed. Possible arrays are investigated and a point spread function of the demonstrator imager is modelled. The results of using this imager system for a security scanning application are presented and conclusions about relevant technologies are given.

Paper Details

Date Published: 19 May 2005
PDF: 5 pages
Proc. SPIE 5789, Passive Millimeter-Wave Imaging Technology VIII, (19 May 2005);
Show Author Affiliations
Neil A. Salmon, QinetiQ (United Kingdom)
John Beale, QinetiQ (United Kingdom)
Andy Beard, QinetiQ (United Kingdom)
Mike Dean, QinetiQ (United Kingdom)
Steve Hayward, QinetiQ (United Kingdom)
Paul Hickling, QinetiQ (United Kingdom)
Ser T. Chiw, Birmingham Univ. (United Kingdom)
Hooshang Ghafouri-Shiraz, Birmingham Univ. (United Kingdom)
Peter Hall, Birmingham Univ. (United Kingdom)
Rod Macpherson, ALPS UK Electric (United Kingdom)
Rob Lewis, Circuit Consultants Ltd. (United Kingdom)
Alan H. Lettington, Reading Univ. (United Kingdom)
Dennis Dunn, Reading Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 5789:
Passive Millimeter-Wave Imaging Technology VIII
Roger Appleby; David A. Wikner, Editor(s)

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