Hyperspectral imaging has emerged as a useful technology for target recognition and anomaly detection. However, passive hyperspectral sensors in the VNIR/SWIR are limited to daytime and fair weather operations. Furthermore, for applications such as material identification, the need for reflectance spectra requires either in-scene calibration panels or detailed atmospheric information. Active hyperspectral sensing has the potential to increase the utility of hyperspectral imaging by enabling nighttime operation and non-cooperative conversion to reflectance. At MIT Lincoln Laboratory we have developed an active hyperspectral sensor system to investigate combining active illumination with hyperspectral imaging. Our primary illumination source is a novel broadband 'white light' laser, developed at MIT Lincoln Laboratory. Initial phenomenology measurements have revealed an additional benefit of active illumination - enhanced scene contrast due to shadow reduction. We have demonstrated two orders of magnitude decrease in false alarm rates with active illumination versus passive.


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    Title :

    Active hyperspectral imaging



    Conference:

    Imaging Spectrometry VI ; 2000 ; San Diego,CA,United States


    Published in:

    Publication date :

    2000-11-15





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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