Digital Beam-Forming for Passive Millimetre Wave Security Imaging

Author

Salmon, N.A. ; Beale, J. ; Parkinson, J. ; Hayward, S. ; Hall, Peter S. ; Macpherson, R. ; Lewis, R. ; Harvey, A.

Author_Institution

QinetiQ, Malvern

fYear

2007

fDate

11-16 Nov. 2007

Firstpage

1

Lastpage

11

Abstract

This paper reviews digital beam-forming as an alternative technology for the development of passive millimetre wave (PMMW) imagers. Considering recent technology developments and end-user requirements, digital beam- forming is an attractive prospect for a new architecture of PMMW security imager. The radiometric sensitivity in PMMW electronic beam-forming is investigated using beam- former simulations and comparisons made with a mechanical scanning PMMW imager. The objectives, design considerations and progress to date on a demonstrator programme for a PMMW digital beam-forming imager directed at the commercial security screening market are discussed. The benefits of digital beam-forming for security scanners are reviewed together with the calibration technique and the programme future.

Keywords

calibration; image scanners; millimetre wave imaging; radiometry; security; beamformer simulations; calibration technique; digital beamforming; electronic beamforming; passive millimetre wave security imaging; radiometric sensitivity; security scanner; beam-forming; imaging; millimetre wave; passive; scanning; terahertz;

fLanguage

English

Publisher

iet

Conference_Titel

Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on

Conference_Location

Edinburgh

Print_ISBN

978-0-86341-842-6

Type

conf

Filename

4458427