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 20 of 61 for “"detection range"”.
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Automated Regulation of LiDAR Detection Range with Model-Guided Extremum Seeking Control
LiDAR detection is susceptible to ambient interference. Therefore, it is important to maintain LiDAR detection performance when it operates autonomously in varying environments. In this paper, an optimization approach is proposed to automatically regulate LiDAR detection range through a …
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Evaluation of effective MDTD/MRTD for FLIR from PREOS92 measurement data
… temperature difference (Delta Tapp) at maximum range and compares ATapp with MDTD/MRTD of a typical FLIR system. The atmospheric propagation code (SEARAD) and Planck's radiation law were employed to obtain atmospheric transmittance and path radiance. The atmospheric parameters were selected as …
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Si-based Germanium Tin Photodetectors for Short-Wave and Mid-Wave Infrared Detections
… imaging system working in the infrared range keeps increasing for the last decade, especially for civil applications. Although several group IV materials such as silicon and germanium are used to realize detectors in the visible and near infrared region, they are not the efficient …
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Electrochemical Sensor for Metal Ions and Phosphate Ion Detection for Biomedical and Agriculture Application
… Hg<sup>2+</sup>, Pb<sup>2+</sup>) and phosphate detections in fertilizers with high sensitivity, high detection range, repeatability and portability. The heavy metal electrochemical sensors were made using novel graphene oxide/silver nanowire (GO/AgNWs) composite as working electrode. The …
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Capacitive sensing with a fluorescent lamp
… lamp. The prototype lamp sensor demonstrated a detection range of 10 feet for the presence and motion of a human below the lamp. Potential applications of the lamp sensor include proximity detection, motion sensing, security monitoring, activity level monitoring for power management and control …
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Analysis and solutions for RFID tag and RFID reader deployment in wireless communications applications. Simulation and measurement of linear and circular polarised RFID tag and reader antennas and analysing the tags radiation efficiency when operated close to the human body.
… efficiency of the RFID reader antenna and the detection range of the RFID tag antenna, subject to a small and compact antenna¿s design configuration have been studied. The present work has been addressed directly to reduce the cost, size and increase the detection range and communication …
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Assessing Quantum Magnetometry as an EmergingDetection Modality for Strategic Anti-Submarine Warfare
… a slightly more than two-fold increase in detection range. Improvements in detection range would have to be quite significant to have any strategic impact, due to the vast areas of the ocean required to search to find submarines. Secondly, magnetometers are limited by more factors than …
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Design and Development of a Hydrophone Array for an Autonomous Underwater Vehicle Capable of Real-Time Detection and Tracking of Surface Vessels
… been shown useful for underwater acoustic source detection and tracking. The work presented here demonstrates use of a passive acoustic system for an Autonomous Underwater Vehicle (AUV) composed of a 2D hydrophone array along with a post processing algorithm for real time detection and tracking of …
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A standalone capacitively coupled occupancy sensor
… as a replacement source and operate over a wide range of output frequencies and amplitudes. The sensor electronics are implemented with active sensing electrodes and resistive and capacitive feedback modes are evaluated for performance. Optimal front end feedback, electrode spacing, and signal …
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An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation
… at distances that varied with the acoustic detection range of the island. No avoidance reaction was found. Propagation modeling of the snapping shrimp sounds suggested that the detection range of the island was beyond the visual limit of the survey, indicating that snapping shrimp sounds may …
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An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation
… at distances that varied with the acoustic detection range of the island. No avoidance reaction was found. Propagation modeling of the snapping shrimp sounds suggested that the detection range of the island was beyond the visual limit of the survey, indicating that snapping shrimp sounds may …
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The Categorization of Soil Moisture Content in the Near Infrared Spectrum
… The atmospheric spectral information and target detection range for infrared spectroscopy was analyzed. In order to measure soil moisture using grating spectroscopy, a trade study of the Argus 1000 spectrometer components was performed. This provided the basis for the chassis and component …
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Interferometric-spatial-phase imaging for sub-nanometer three-dimensional positioning
… Alignment detectivity is <0.5 nm, and detection range is >500 gm. Unlike amplitude-based interferometers, this spatial-phase-encoding interferometer achieves high alignment detectivity without sensitivity to variations in wavelength, gap and other factors, such as resist layers and …
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IDENTIFICATION AND QUANTIFICATION OF IONIC POLLUTANTS IN ENVIRONMENTAL WATER
… fluorescent sensor was demonstrated for the detection of a cationic pollutant, namely Hg2+, with tunable detection range. This sensor can easily detect Hg2+ in the presence of other metal ions. It is potentially useful for on-site detection in environmental applications involving different …
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Methodologies and Applications of Data Coordinate Conversion for Roadside LiDAR
Light Detection and Ranging (LiDAR) is becoming more popular in applications of the transportation field, including traffic data collection, autonomous vehicles, and connected vehicles. Compared with traditional methods, LiDAR can provide high-resolution-micro-traffic data (HRMTD) for all road …
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Collaborative UAV path planning with deceptive strategies
… route while operating within aural and visual detection range of threat forces. The advent of Small UAVSs (SUAVs) has fundamentally changed the interaction between the observer and the observed. SUAVs fly at much lower altitudes than their predecessors, and the threat can detect the …
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Detection of glial interleukin-6 release: Development of a novel interleukin-6 Elisa
… immunosorbent (ELISA) assay resulted in a detection range of 1 ng/m1 to 10 ng/mL IL-6. The limit of detection (LOD) for IL-6 was 0.25 ng/mL. Troubleshooting techniques were attempted including matrix effects, non-specific binding, and coating buffer pH differences. In comparison to the …
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A field screening method for polychlorinated biphenyl compounds in water
… 254 nm light from a hand portable UV light. The detection range was 1.0-500 ppm (or higher) in the presence of 3% Renex KB or Neodol (R) 1-7; which surfactants are currently being used for PCB soil remediation.
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A Novel Long-Range Passive UHF RFID System over Twisted-pair Cable
… However, due to its high cost, limited read range, and uncertain reliability, its adoption still lags, especially in large-scale organisations. Even though an RFID distributed antenna system (DAS) can greatly improve the detection range and read rate of a single reader when system uses …
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Chemical and biomedical sensors using two dimensional materials
… drift. The sensors also need to cover a wide range of recognizable chemicals and molecules. Two-dimensional materials are perfect candidate as next-generation sensing materials because of their unique electrical, optical, mechanical and chemical properties. In this thesis, the fabrication and …
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