Journal ArticleDOI
Coded aperture imaging in X- and gamma-ray astronomy
TLDR
Coded aperture imaging in high energy astronomy represents an important technical advance in instrumentation over the full energy range from X-to γ-rays and is playing a unique role in those spectral ranges where other techniques become ineffective or impracticable due to limitations connected to the physics of interactions of photons with matter.Abstract:
Coded aperture imaging in high energy astronomy represents an important technical advance in instrumentation over the full energy range from X- to γ-rays and is playing a unique role in those spectral ranges where other techniques become ineffective or impracticable due to limitations connected to the physics of interactions of photons with matter. The theory underlying this method of indirect imaging is of strong relevance both in design optimization of new instruments and in the data analysis process. The coded aperture imaging method is herein reviewed with emphasis on topics of mainly practical interest along with a description of already developed and forthcoming implementations.read more
Citations
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Journal ArticleDOI
New family of binary arrays for coded aperture imaging
TL;DR: 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.
Journal ArticleDOI
Deep Learning Techniques for Inverse Problems in Imaging
Gregory Ongie,Ajil Jalal,Christopher A. Metzler,Richard G. Baraniuk,Alexandros G. Dimakis,Rebecca Willett +5 more
TL;DR: A taxonomy that can be used to categorize different problems and reconstruction methods in deep neural networks and discusses the tradeoffs associated with these different reconstruction approaches, caveats and common failure modes.
Journal ArticleDOI
The INTEGRAL/IBIS scientific data analysis
Andrea Goldwurm,P. David,Luigi Foschini,A. Gros,Philippe Laurent,A. Sauvageon,A. J. Bird,L. Lerusse,N. Produit +8 more
TL;DR: The coded-mask imaging gamma-ray telescope onboard the INTEGRAL satellite (IBIS) provides high-resolution (12') sky images of 29° x 29° in the energy range from 15 keV to 10 MeV with typical on-axis sensitivity of 1 mCrab at 100 keV (3σ, 10 6 s exposure).
Journal ArticleDOI
The INTEGRAL/IBIS Scientific Data Analysis
Andrea Goldwurm,P. David,Luigi Foschini,A. Gros,Philippe Laurent,A. Sauvageon,A. J. Bird,L. Lerusse,N. Produit +8 more
TL;DR: The coded-mask imaging gamma-ray telescope onboard the INTEGRAL satellite (IBIS) provides high-resolution sky images of 29deg x 29deg in the energy range from 15 keV to 10 MeV with typical on-axis sensitivity of 1 mCrab at 100 keV (3 sigma, 10E6 s exposure) as discussed by the authors.
Journal ArticleDOI
Massively parallel X-ray holography
Stefano Marchesini,Stefano Marchesini,Sébastien Boutet,Sébastien Boutet,Anne Sakdinawat,Michael J. Bogan,Saša Bajt,Anton Barty,Henry N. Chapman,Matthias Frank,Stefan P. Hau-Riege,Abraham Szöke,C. Cui,David A. Shapiro,Malcolm R. Howells,John C. H. Spence,Joshua W. Shaevitz,Joanna Y. Lee,Janos Hajdu,Janos Hajdu,M. Marvin Seibert +20 more
TL;DR: In this paper, a uniformly redundant array placed next to the sample, multiplies the efficiency of X-ray Fourier transform holography by more than three orders of magnitude, approaching that of a perfect lens, and provides holographic images with both amplitude and phase contrast information.
References
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PatentDOI
Coded aperture imaging with uniformly redundant arrays
E. E. Fenimore,Thomas M. Cannon +1 more
TL;DR: Computer simulations show that the URA with significant shot and background noise is vastly superior to random array techniques without noise, and permits a detector which is smaller than its random array counterpart.
Journal ArticleDOI
A theorem in finite projective geometry and some applications to number theory
TL;DR: In this article, it was shown that there is always at least one collineation of period q with respect to any point in the projective plane PG(2, pn) for every prime p and positive integer n.
Book
Cyclic difference sets
TL;DR: In this paper, the authors discuss the existence questions and constructive existence tests for multipliers and constructiveness tests for difference sets of special type and families of difference sets, and their applications.