Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"passive imaging"”.
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SiGe receiver front ends and flip-chip integrated wideband antennas for millimeter-wave passive imaging
… front end receivers with integrated antennas for passive imaging have been designed and characterized. These front end systems exhibit wideband performance with the highest gain and lowest noise figures reported thus far for silicon-based systems in the 77-GHz and 94-GHz frequency regimes, to the …
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Advanced applications in wide-area impedance sensing
… wide-area impedance sensor used in hyperspectral imaging for a wide variety of applications is presented. Building on previous work, this sensor is decoupled from fluorescent lamps and thus is used to passively detect independent sources such as fluorescent lamps and laptop control signals. The …
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Characterisation of radiation fields with combined fast-neutron and gamma-ray imaging
… and their emitted radiation fields through passive imaging techniques. The research sought to expand upon existing gamma-ray imaging techniques, but with focus on fast-neutron imaging techniques which are few in number. The study involved conceptual design, Monte Carlo optimisation and …
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Topics in diffuse field ultrasonics
Random wave fields that have explored large volumes over long times contain much information. Studying these diffuse fields and extracting the information contained in them are the primary aims of Diffuse Field Theory. When the waves of interest are elastic waves at frequencies above 20kHz, the …