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 5 of 5 for “"Noise Imaging"”.
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Ambient seismic noise imaging using trans-dimensional and machine learning techniques with application to Borneo and Iceland
… dispersion measurements from ambient seismic noise data for the purposes of Earth imaging has become increasingly common in recent years and has led to many discoveries that have changed or re-enforced our understanding of Earth structure and processes. At the same time, computational advances …
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Underwater simulation and mapping using imaging sonar through ray theory and Hilbert maps
… to lasers (LIDARs), sonars are unprecise high-noise sensors. Besides its noise, imaging sonars have a wide sound beam effectuating a volumetric measurement. The first part of this dissertation develops an underwater simulator for highfrequency single-beam imaging sonars capable of replicating …
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On the development and application of a photon counting imaging system for broad spectrum luminescence analysis
Novel luminescence equipment, the Photon Counting Imaging System (PCIS), with broad spectrum high sensitivity imaging capabilities, incorporating both thermal and multi-source optical stimulation, and providing flexible facilities for the optical filtering of signals, was designed and constructed. …
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On the development and application of a photon counting imaging system for broad spectrum luminescence analysis
Novel luminescence equipment, the Photon Counting Imaging System (PCIS), with broad spectrum high sensitivity imaging capabilities, incorporating both thermal and multi-source optical stimulation, and providing flexible facilities for the optical filtering of signals, was designed and constructed. …
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Visualizing Interior And Exterior Jet Aircraft Noise
… design of an airplane. Understanding the noise generation mechanisms of a jet aircraft is a crucial first step toward developing the most cost-effective noise and vibrations abatement methods. In this investigation, the Helmholtz Equation Least Squares (HELS) based nearfield acoustic …