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 546 for “"Time-of-flight"”.
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Algorithms for 3D time-of-flight imaging
… thesis describes the design and implementation of two novel frameworks and processing schemes for 3D imaging based on time-of- flight (TOF) principles. The first is a low power, low hardware complexity technique based on parametric signal processing for orienting and localizing simple planar …
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Elemental analysis by neutron time-of-flight spectrometry
… for study in an attempt to extend the advantages of nuclear methods of analysis to their determination. The physical state of a sample submitted to activation analysis frequently determines whether activation analysis is possible or not. Although most solids can readily be submitted to activation …
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Phase enhanced time-of-flight magnetic resonance angiography
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1996.
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A time-of-flight spectrometer for fission fragment identification
… inventories play a key role in many areas of nuclear science from simulation of fissioning systems to diagnostics for optimal reactor operation and waste disposal. New experimental data are needed to further reduce the uncertainty in the current standard data as well as investigating …
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Data processing for 3D time of flight depth imaging
… LiDAR has become used in an increasing number of ground based systems as a vital tool in the development of applications such as gaming, robotics and autonomous vehicles. As a result there is fast developing a requirement for large sensor arrays to provide high resolution 3D imaging. Due to the …
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A universal time of flight equation for space mechanics
A universal time of flight equation for any orbit is developed as a function of the initial and final radius, the change in true anomaly and the initial flight path angle. Lambert's theorem, a new corollary to this theorem, a trigonometric variable substitution and a continuing fraction expression …
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A new Time-of-flight Spectrometer for Impact Generated Ions
Die vorliegende Arbeit behandelt die Entwicklung eines Flugzeitmassenspektrometers (Large Area Mass Analyzer, LAMA) zur chemischen Analyse von Staubteilchen im Weltraum. Dieses Instrument der naechsten Generation wird eine gro\ss e Detektorflaeche 0.1m^2 haben, um moeglichst viele …
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Algorithms and systems for low power time-of-flight imaging
… from augmented reality to robotic navigation. Time-of-flight (ToF) cameras are appealing depth sensors because they obtain dense depth maps with minimal latency. However, for mobile and embedded devices, ToF cameras, which obtain depth by emitting light and estimating its roundtrip time, can be …
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Physics and Algorithms in Time of Flight Based Computational Imaging
Imaging systems work on an interplay of physics, electronics, and algorithms. Designing imaging systems by exploiting all these layers of abstraction can give rise to novel applications and interesting solutions to existing problems. In this thesis, I will explore this design philosophy in 2 …
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Sub-nanosecond time of flight on commercial Wi-Fi cards
Time-of-flight, i.e., the time incurred by a signal to travel from transmitter to receiver, is perhaps the most intuitive way to measure distances using wireless signals. It is used in major positioning systems such as GPS, RADAR, and SONAR. However, attempts at using time-of-flight for indoor …
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Resolving Measurement Errors Inherent with Time-of-Flight Range Imaging Cameras
… measure the distance to objects in the field-of-view (FoV) of the camera, these cameras enable new machine vision applications in robotics, manufacturing, and human computer interaction. Time-of-flight (ToF) range cameras operate by illuminating the scene with amplitude modulated continuous …
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Development of a Full-Field Time-of-Flight Range Imaging System
A full-field, time-of-flight, image ranging system or 3D camera has been developed from a proof-of-principle to a working prototype stage, capable of determining the intensity and range for every pixel in a scene. The system can be adapted to the requirements of various applications, producing high …
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Characterization of Molecular Glycerophospholipids by Quadrupole Time-of-Flight Mass Spectrometry
The physical properties of glycerophospholipids (GPLs) are not only determined by the head group (HG), but also by their fatty acid (FA) chains, which affect their distribution and function within membranes in the cell. Understanding the microheterogenity of lipid membranes on a molecular level …
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Low-cost time-of-flight-based localization techniques for robotic applications
Embargo set by: Seth Robbins for item 105497 Lift date: 2020-03-13T17:36:05Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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Inverse problems in time-of-flight imaging : theory, algorithms and applications
Time-of-Fight (ToF) cameras utilize a combination of phase and amplitude information to return real-time, three dimensional information of a scene in form of depth images. Such cameras have a number of scientific and consumer oriented applications. In this work, we formalize a mathematical …
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Surfactant Assisted Electrospray Ionization Time of Flight Mass Spectrometry of Synthetic Polymers
Synthetic polymers are complex mixtures which often require extensive characterization to determine chemical composition and structure. Mass spectrometric techniques have greatly enhanced the quantity, as well as the quality, of data that can be used to characterize synthetic polymers. Electrospray …
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Monte Carlo Simulations of Powder Diffraction at Time-of-Flight Neutron Sources
… the instrument. Most available data analysis software operates on the measured data to extract sample parameters, however, few programs can take sample parameters and rigorously simulate the expected diffraction profile for a given instrument. In this work Monte Carlo methods, within the …
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