This paper proposes a multiple-model (MM) hypothesis testing approach for detection of unknown target maneuvers that may have several possible prior distributions. An MM maneuver detector based on sequential hypothesis testing is developed. Simulation results that compare the performance of the proposed MM detector to that of traditional maneuver detectors are presented. They demonstrate that t...

NIST X-RAY DETECTOR HEADS FOR COMMERCIALIZATION NIST has granted co-exclusive licenses to two private companies for commercialization of a revolutionary microcalorimeter-based x-ray detector with an energy resolution of 2 eV, some 50 times better than conventional semiconductor-based detectors. The new technology will be used in instruments for the characterization and analysis of materials by ...

Material identification in radiography is traditionally performed by dualenergy systems, using double exposure technique or two-layers detectors. Performance of such systems results from the closeness of the materials to be discriminated, from photonic noise, and energetic discriminating power of the detector. For difficult problems such as explosive detection in luggage, conventional dual-ener...

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COMMERCIAL VISION SYSTEMS In the last few years thermal imaging has found its way into many more commercial applications. Most of these applications require a low cost product with an uncooled detector. These sensors image in the LWIR, or longwave infrared band (7 14 μm). Different types of uncooled detectors are available on the market. Since the infrared detector is the heart of any thermal i...

the absorption properties of charge transfer organic semiconductor ttf-tcnq (tetrathiafulvalene-tetracyanoquhodimete ) filmsdeposited on kbr singlecrystal, quartz and glass substrates in far infrared have been investigated. an absorption edge at ?10 ??m was observed. photoconductivity, photoconduction efficiency and gain and photocarrier's lifetime have been measured. the results show an e...