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

    17 Citations (Scopus)

    Abstract

    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)978-081949506-8
    DOIs
    Publication statusPublished - 2013
    MoE publication typeNot Eligible
    EventSPIE Defense, Security, and Sensing - Baltimore, MD, United States
    Duration: 29 Apr 20133 May 2013

    Publication series

    SeriesProceedings of SPIE
    Volume8715
    ISSN0277-786X

    Conference

    ConferenceSPIE Defense, Security, and Sensing
    CountryUnited States
    CityBaltimore, MD
    Period29/04/133/05/13

    Fingerprint

    Submillimeter waves
    Video cameras
    Diffraction
    Scattering
    Color
    Imaging systems
    Imaging techniques

    Keywords

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

    Cite this

    Luukanen, A., Kiuru, T., Leivo, M., Rautiainen, A., & Varis, J. (2013). Passive three-colour submillimetre-wave video camera. In D. A. Wikner, & A. R. Luukanen (Eds.), Passive and Active Millimeter-Wave Imaging XVI [87150F] International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 8715 https://doi.org/10.1117/12.2018038
    Luukanen, Arttu ; Kiuru, Tero ; Leivo, Mikko ; Rautiainen, Anssi ; Varis, Jussi. / Passive three-colour submillimetre-wave video camera. Passive and Active Millimeter-Wave Imaging XVI. editor / David A. Wikner ; Arttu R. Luukanen. International Society for Optics and Photonics SPIE, 2013. (Proceedings of SPIE, Vol. 8715).
    @inproceedings{badc81f7a9374d36aababddf348711f9,
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    abstract = "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.",
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    Luukanen, A, Kiuru, T, Leivo, M, Rautiainen, A & Varis, J 2013, Passive three-colour submillimetre-wave video camera. in DA Wikner & AR Luukanen (eds), Passive and Active Millimeter-Wave Imaging XVI., 87150F, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 8715, SPIE Defense, Security, and Sensing, Baltimore, MD, United States, 29/04/13. https://doi.org/10.1117/12.2018038

    Passive three-colour submillimetre-wave video camera. / Luukanen, Arttu; Kiuru, Tero; Leivo, Mikko; Rautiainen, Anssi; Varis, Jussi.

    Passive and Active Millimeter-Wave Imaging XVI. ed. / David A. Wikner; Arttu R. Luukanen. International Society for Optics and Photonics SPIE, 2013. 87150F (Proceedings of SPIE, Vol. 8715).

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

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    Luukanen A, Kiuru T, Leivo M, Rautiainen A, Varis J. Passive three-colour submillimetre-wave video camera. In Wikner DA, Luukanen AR, editors, Passive and Active Millimeter-Wave Imaging XVI. International Society for Optics and Photonics SPIE. 2013. 87150F. (Proceedings of SPIE, Vol. 8715). https://doi.org/10.1117/12.2018038