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 34 for “"system calibration"”.
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DEVELOPMENTS IN E&EM GEOPHYSICS:JOINT INVERSION, TIME-SERIES ANALYSIS AND SYSTEM CALIBRATION
… the HydroGeosITe was designed to serve as a calibration site for AEM systems, supporting future campaigns. Accordingly, a key research objective was to advance the state of the art in AEM calibration procedures, setting a new standard for Italy. At the HydroGeosITe, an extremely dense E&EM …
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Modeling nonpoint-source uranium pollution in an irrigated stream-aquifer system: calibration and simulation
… for assessing U pollution in a stream-aquifer system within a large irrigated area. To achieve this, a computational model is built and tested that can predict with reasonable accuracy how U, along with Se and NO3, are mobilized and move within a coupled system of streams and groundwater. The …
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Development of a Power System and Analysis of Inertial System Calibration for a Small Autonomous Underwater Vehicle
… cost. This thesis describes the power system of a small, inexpensive autonomous underwater vehicle developed by the Autonomous Systems Controls Laboratory at Virginia Tech. Reduction in vehicle size and cost reduces the accuracy of navigational sensors, leading to the need for …
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Development of Novel Attention-Aware Deep Learning Models and Their Applications in Computer Vision and Dynamical System Calibration
… modules in manufacturing, healthcare, and system identification applications. In essay 1, we introduce a novel computer vision tool that tracks the melt pool in X-ray images of laser powder bed fusion using attention modules. In essay 2, we present a mask-guided attention (MGA) classifier …
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Evaluation of room-temperature semiconductor detectors for ultrahigh resolution pet imaging
… DOI information are presented. A prototype PET system based on this detector has been developed. The corresponding system calibration algorithm is presented for the PET system, which considers the DOI information. The validity of the two proposed methods of extracting DOI information has been …
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Computer-Aided Analysis of Photoelastic Images
… partial fringe determination, stress separation, system calibration, experimental noise, and recording media are discussed. Experimental results for disk and a square plate are presented and analyzed by a computer program. A listing of a photoelastic image processing program is included. The …
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Calibration of Jicamarca radar using F-region incoherent scatter for measurements of D-region backscatter RCS
… the Jicamarca Radio Observatory in Perú. Radar system calibration is accomplished by simulating the propagation of transmitted and backscattered radio waves through the ionosphere and comparing the simulated power returns to the measurements. The forward model used in the calibration algorithm …
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Image-based Fine-scale Infrastructure Monitoring
… the physical health of civil infrastructure systems is an important task that must be performed frequently in order to ensure their serviceability and sustainability. Additionally, laboratory experiments where individual system components are tested on the fine-scale level provide essential …
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A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration
… a demonstrated method for the performance of a calibration method for a controlled reception pattern antenna (CRPA) using a Software Defined Radio (SDR) configuration. The combination CRPA and SDR system consists of a low-cost 7-element configuration where the antenna RF inputs are feed directly …
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Applications of the Bayesian approach for experimentation and estimation
A Bayesian framework for systematic data collection and parameter estimation is proposed to aid experimentalists in effectively generating and interpreting data. The four stages of the Bayesian framework are: system description, system analysis, experimentation, and estimation. System description …
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Delta-Sigma digital-RF modulation for high data rate transmitters
… to conventional IQ modulators for wideband systems. A prototype transmitter IC built in 0.13 pm CMOS demonstrates a data rate of 1.2 Gb/s using OFDM modulation in a bandwidth of 200 MHz centered at 5.25 GHz. The modulator consumes 187 mW and occupies a die area of 0.72 mm2. A quadrature …
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Design and implementation of a high precision profilometer
A high precision profilometry system was developed primarily for the inspection of two-sided sample specimens. Based upon system specifications and requirements, it was found that the most suitable profilometry technique was atomic force microscopy (AFM). The major components of the profilometer …
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Computational aspects of treatment planning for neutron capture therapy
… current and future BNCT treatment planning systems (TPSs) under conditions relevant to both patient planning and planning system calibration. Using these reference problems, four of the TPSs that have been used in clinical BNCT (MacNCTPlan, NCTPlan, BNCTRtpe, and SERA) were compared to …
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Development of an imaging polarimeter for water wave slope measurements
… the simple setup is the need for more extensive system calibration and image post-processing. The camera setup was fully calibrated (extrinsic, intrinsic, and distortion parameters) with a specialized calibration procedure using a custom built target. The analyzer matrix, which transforms the …
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Development and evaluation of an ion induced x-ray emission system for the analysis of light and medium weight elements
… a proton induced X-ray emission (PIXE) analysis system, especially designed and builtfor routine quantitative multi-elemental analysis of a large number of samples. The historical and general developments of the analytical technique and the physical processes involved are discussed. The …
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Development of a Compact Diamond NV- Magnetometer
… to bridge the gap be tween academic, laboratory systems and industrial, field-deployable devices. The research includes the construction of an optical bench set-up that is capable of eventually obtaining optically detected magnetic resonance (ODMR) signals for NV− centres under controlled …
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Development of a statistical method for validating ESDM strain-field output
… may be estimated from the uncertainty in the system calibration, the output voltage of the system and the tolerance of the strain gage gage factor; and 4) the ESDM strain-fields may be validated against a set of strain gage measurements by a combining a 2-group z-test (hypothesis test on two …
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Entwicklung eines Systems zur dreidimensionalen Particle Tracking Velocimetry mit Genauigkeitsuntersuchungen und Anwendung bei Messungen in einem Wind-Wellen Kanal
… for correspondence detection and camera system calibration. The accuracy of each step constituting the algorithem was determined using synthetical as well as real world data. The dependence of the quality of the calibration on the accurate determination of the position of the calibration …
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