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 12 of 12 for “"focal plane array (FPA)"”.
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Gated multi-cycle integration (GMCI) for focal plane array (FPA) applications
… (GMCI) were first developed specifically for focal plane array dealing with repetitive or modulated image. The operational modes of GMCI include gated integration (GI), phase sensitive integration (PSI), multi-point summation, multi-point subtraction, multi-sample averaging and some of their …
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Data compressive paradigm for spectral sensing and classification using electrically tunable detectors
… capability of tunable DWELL IR focal-plane array (FPA), again without using any spectral filters; and (3) development of a generalized filter-free data-compressive spectral sensing paradigm using the DWELL detector that enables arbitrarily specified MS sensing (e.g., spectral …
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Design, fabrication and characterization of terahertz quantum-well photodetectors
… a fast and sensitive THz photodetector ready for array integration is not available. A THz Quantum-well Photodetector (QWP) has the properties of being fast, sensitive, low-noise, and narrow-band. It is promising for large-array integration for THz imaging. In addition, a THz QWP-LED …
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Characterization of spectral response of a quantum dots-in-a-well infrared focal plane array
… quantum dots-in-a-well (DWELL) infrared focal plane array (FPA) was undertaken and reported here. The hypothesis of the study is that the FPA will exhibit bias-tunable spectral response. Broadband and two-color performance measures of the DWELL FPA are discussed and presented. The DWELL …
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Investigation of thermal electric cooler-less microbolometer infrared imaging
… a Thermal Electric Cooler (TEC) to stabilize the Focal Plane Array (FPA). An FPA is an array of microbolometers which are small vanadium oxide elements whose resistances are very sensitive to IR radiation. The ability to run an imaging module without the TEC results in significant reduction in FPA …
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Deep Learning and Phase Retrieval for Chemical Holographic Imaging: System Inverse Modeling and Sample Property Prediction
… light sources and advances in larger MCT focal plane array (FPA) detectors, discrete infrared imaging (DFIR) enables high-resolution and high-speed infrared (IR) imaging for applications across multiple fields such as clinical diagnosis, forensics, and material science. The problems …
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Area-constrained frequency estimation for focal plane arrays
… frequency and amplitude of signals generated by focal plane array (FPA) on a per-pixel basis, i.e., pixel-matched processing. Addressing this problem requires the design of signal processing algorithms and circuit architectures subject to stringent area constraints imposed by the pixel pitch, …
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THz Radiation Detection Based on CMOS Technology
… noise filtering for the multi-pixel FET detector arrays and hence achieving similar sensitivity by the external lock-in amplifier. Next, based on the experimental THz characterization and measurement results of a single pixel (antenna-coupled FET detector + readout circuit), the design and …
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Algorithms for spectral and spatio-spectral feature selection and classification for tunable sensors : theory and application
… data and real infrared imagery from the DWELL Focal Plane Array (FPA) and the Airborne Hyperspectral Imager (AHI). Our results include supervised classification and spectral unmixing and abundance estimation using AHI hyperspectral imagery, rock classification study using laboratory and DWELL …
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Investigation of InAs/GaSb superlattice based nBn detectors and focal plane arrays
… scheme, and realization of an nBn SLS FPA. This thesis covers three topics: 1) optical and electrical characteristics of single pixel nBn SLS devices operating in the MWIR and LWIR spectral regions; 2) development of a MWIR focal plane array (FPA) based on the InAs/GaSb SLS detector …
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Reagents for infrared chemical imaging of fingerprints on difficult surfaces
… of mid-infrared spectra across a sample using a focal plane array (FPA) detector. This allows for the collection of chemically specific spectral data while maintaining spatial information. Images can then be generated based on spectral / chemical contrast between components within a sample. A key …
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Design of a Readout Integrated Circuit (ROIC) for Infrared Imaging Applications
… systems depends on 1) the sensitivity of the Focal Plane Arrays (FPA) as the transducer of the electromagnetic wave and 2) the Readout Integrated Circuit (ROIC) that provides the pixel data to the processing unit. In this thesis, we describe specific ROIC designed for a dual-band IR imaging …