Passive three-colour submillimetre-wave video camera

Arttu Luukanen, Tero Kiuru, Mikko Leivo, Anssi Rautiainen, Jussi Varis

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    19 Citations (Scopus)


    Stand-off detection for concealed weapons is one of the applications for passive submillimetre-wave imaging. The operating frequency (neglecting technology limitations) is often a compromise between the diffraction-limited angular resolution for a fixed maximum aperture diameter, and the extinction of the signal in obscurant layers: At high frequencies towards the 1 THz mark, excellent angular resolution is readily achievable with modest aperture diameters, while scattering and attenuation by clothing is high which creates potentially more clutter rather than improving detection capability. At lower frequencies towards 100 GHz, attenuation and scattering by clothing is much less pronounced, albeit at significantly reduced spatial definition thanks to increased diffraction. In order to avoid the abovementioned compromise, we have constructed a three-band passive imaging system operating at effective centre frequencies of 250 GHz, 450 GHz and 720 GHz. Aspects of the system will be presented.
    Original languageEnglish
    Title of host publicationPassive and Active Millimeter-Wave Imaging XVI
    EditorsDavid A. Wikner, Arttu R. Luukanen
    PublisherInternational Society for Optics and Photonics SPIE
    ISBN (Print)978-0-8194-9506-8
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    EventSPIE Defense, Security, and Sensing - Baltimore, MD, United States
    Duration: 29 Apr 20133 May 2013

    Publication series

    SeriesProceedings of SPIE


    ConferenceSPIE Defense, Security, and Sensing
    Country/TerritoryUnited States
    CityBaltimore, MD


    • bolometer
    • concealed weapons detection
    • passive imaging
    • stand-off detection
    • submillimeter-wave
    • thz imaging


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