New family of binary arrays for coded aperture imaging

Journal Article · Sun Oct 15 04:00:00 EDT 1989 · Applied Optics; (USA)

DOI:https://doi.org/10.1364/AO.28.004344· OSTI ID:5363656

Gottesman, S R ^[1]; Fenimore, E E ^[2]

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1. Grumman Corporate Research Center, Bethpage, New York 11714 (US)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545

We introduce a new family of binary arrays for use in coded aperture imaging which are predicted to have properties and sensitivity (SNR) equal to that of the uniformly redundant array (URA). The new arrays, called MURAs (modified URAs), have decoding coefficients all of which are unimodular, resulting in a reconstructed image with noise terms completely independent of image--source structure. Although the new arrays are derived from quadratic residues, they do not belong to the cyclic difference set or set of pseudonoise sequences and consequently are constructible in configurations forbidden to those designs, thus providing the user with a wider selection of aperture patterns to match his particular needs. With the addition of MURAs to the family of binary arrays, all prime numbers can now be used for making optimal coded apertures, increasing the number of available square patterns by more than a factor of 3.

• OSTI ID: 5363656
• Journal Information: Applied Optics; (USA), Journal Name: Applied Optics; (USA) Vol. 28:20; ISSN 0003-6935; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

440800* -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
ALGORITHMS
APERTURES
ARRAY PROCESSORS
DESIGN
IMAGE PROCESSING
MATHEMATICAL LOGIC
OPENINGS
PROCESSING
SENSITIVITY
SIGNAL-TO-NOISE RATIO