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

Technical Report · Sun Oct 01 00:00:00 EDT 1978

DOI:https://doi.org/10.2172/6778673· OSTI ID:6778673

Chu, K W

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.

• Research Organization: Sandia Labs., Albuquerque, NM (USA)
• OSTI ID: 6778673
• Report Number(s): SAND-78-1625
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210900 -- Nuclear Power Plants-- Process Heat Reactors-- (-1987)
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
APERTURES
BREEDER REACTORS
COMPARATIVE EVALUATIONS
DISTRIBUTION
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FUEL ELEMENTS
FUEL PINS
GAMMA SPECTRA
IMAGE PROCESSING
IMAGES
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
OPENINGS
REACTOR COMPONENTS
REACTOR CORES
REACTORS
REMOTE VIEWING EQUIPMENT
SHADOW EFFECT
SPECTRA