Calibration source and temperature standard for passive millimetre wave imagers

Chris T. Taylor, Peter Scicluna, Peter Wilkinson, Neil Salmon

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper discusses a practical and affordable approach to the accurate calibration of electronic beam-forming passive millimetre-wave imagers. With the aim of calibrating imagers with radiometric sensitivities δT <1 K, we have constructed a thermal radiation source at ambient temperature that fills the imager field-of-view at close range and can support several controllable thermal radiation sources to provide absolute and differential radiation temperature standards. Using a variety of temperature sensors, which have been extensively cross-calibrated against each other and a commercially provided calibration standard that is accurate to <0.1 K, we have achieved absolute and relative calibration temperature uncertainties of less than 0.25 K. © 2010 SPIE.
    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering|Proc SPIE Int Soc Opt Eng
    Place of PublicationProc. SPIE 7837, 78370N (2010)
    PublisherSPIE
    Volume7837
    ISBN (Print)9780819483553
    DOIs
    Publication statusPublished - 2010
    EventMillimetre Wave and Terahertz Sensors and Technology III - Toulouse
    Duration: 1 Jul 2010 → …

    Conference

    ConferenceMillimetre Wave and Terahertz Sensors and Technology III
    CityToulouse
    Period1/07/10 → …

    Keywords

    • Calibration
    • Imagers
    • Millimetre wave
    • Passive
    • Temperature standard

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