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Cramer-Rao Bound Analysis Of Multi-Frame Blind Deconvolution, Alim Haji
Cramer-Rao Bound Analysis Of Multi-Frame Blind Deconvolution, Alim Haji
Optical Science and Engineering ETDs
This thesis explores how support constraints and multiple frames affect multi-frame blind deconvolution. Previous research in non-blind deconvolution, which seeks to estimate an object from a blurred and noisy image, characterized how the use of support constraints exploited spatial noise correlations to reduce noise in the estimate of the object. In multi-frame blind deconvolution, the blurring function is unknown and must be estimated along with the object. Applying a support constraint to both the object and the blurring functions, when using blind deconvolution, is one way to ensure a unique solution. The effects on the estimate of the object as …
Analysis Of A Laser Induced Plasma In High Pressure Sf6 Gas For High-Voltage, High-Current Switching, Waylon Clark
Analysis Of A Laser Induced Plasma In High Pressure Sf6 Gas For High-Voltage, High-Current Switching, Waylon Clark
Optical Science and Engineering ETDs
The Laser Triggered Switch Program at Sandia National Laboratories is an intensive development study to understand and optimize the laser triggered gas switch (LTGS) for the Z-Refurbishment (ZR) project. The laser triggered gas switch is the final command-triggered switch in the machine, and reliability and performance of the switch is crucial. A modified LTGS trigger section with optical viewing windows perpendicular to the laser propagation is used to analyze a laser induced plasma spark in SF6 gas in order to quantify parameters such as spark length and plasma temperature. The laser spark is created through a focusing lens by the …