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Title: Coded aperture imaging: a comparison between Fresnel zone apertures and uniformly redundant array apertures. [LMFBR fuel motion detection]

Abstract

Using computer simulations, comparisons are made between a one-dimensional Fresnel zone aperture and a one dimensional uniformly redundant array aperture. In the former case, artifacts may produce severe distortions in the reconstructed image, and an iterative technique to remove these artifacts is described. In comparison to the Fresnel zone aperture, images reconstructed from uniformly redundant array apertures have few artifacts. A quantum noise analysis for the uniformly redundant array is presented to indicate the conditions under which a uniformly redundant array will produce a signal-to-noise advantage compared to an equivalent pinhole aperture.

Authors:
Publication Date:
Research Org.:
Sandia Labs., Albuquerque, NM (USA)
OSTI Identifier:
6778673
Report Number(s):
SAND-78-1625
TRN: 79-003232
DOE Contract Number:  
EX-76-C-04-0789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; APERTURES; LMFBR TYPE REACTORS; REACTOR CORES; REMOTE VIEWING EQUIPMENT; COMPARATIVE EVALUATIONS; DISTRIBUTION; FUEL PINS; GAMMA SPECTRA; IMAGE PROCESSING; IMAGES; SHADOW EFFECT; BREEDER REACTORS; EPITHERMAL REACTORS; FAST REACTORS; FBR TYPE REACTORS; FUEL ELEMENTS; LIQUID METAL COOLED REACTORS; OPENINGS; REACTOR COMPONENTS; REACTORS; SPECTRA; 440300* - Miscellaneous Instruments- (-1989); 210900 - Nuclear Power Plants- Process Heat Reactors- (-1987)

Citation Formats

Chu, K W. Coded aperture imaging: a comparison between Fresnel zone apertures and uniformly redundant array apertures. [LMFBR fuel motion detection]. United States: N. p., 1978. Web. doi:10.2172/6778673.
Chu, K W. Coded aperture imaging: a comparison between Fresnel zone apertures and uniformly redundant array apertures. [LMFBR fuel motion detection]. United States. https://doi.org/10.2172/6778673
Chu, K W. Sun . "Coded aperture imaging: a comparison between Fresnel zone apertures and uniformly redundant array apertures. [LMFBR fuel motion detection]". United States. https://doi.org/10.2172/6778673. https://www.osti.gov/servlets/purl/6778673.
@article{osti_6778673,
title = {Coded aperture imaging: a comparison between Fresnel zone apertures and uniformly redundant array apertures. [LMFBR fuel motion detection]},
author = {Chu, K W},
abstractNote = {Using computer simulations, comparisons are made between a one-dimensional Fresnel zone aperture and a one dimensional uniformly redundant array aperture. In the former case, artifacts may produce severe distortions in the reconstructed image, and an iterative technique to remove these artifacts is described. In comparison to the Fresnel zone aperture, images reconstructed from uniformly redundant array apertures have few artifacts. A quantum noise analysis for the uniformly redundant array is presented to indicate the conditions under which a uniformly redundant array will produce a signal-to-noise advantage compared to an equivalent pinhole aperture.},
doi = {10.2172/6778673},
url = {https://www.osti.gov/biblio/6778673}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {10}
}