Coded aperture imaging using imperfect detector systems

Details Coded aperture imaging using imperfect detector systems Coded aperture imaging using imperfect detector systems

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994nimpa.342..600b&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 342, Issue 2-3, p. 600-608.

Physics

1

Scientific paper

The imaging properties of a gamma-ray telescope which employs a coded aperture in conjunction with a modular detection plane has been investigated. Gaps in the detection plane, which arise as a consequence of the design of the position sensitive detector used, produce artifacts in the deconvolved images which reduce the signal to noise ratio for the detection of point sources. The application of an iterative image processing algorithm is shown to restore the image quality to that expected from an ideal detector. The efficiency of image processing has enabled its subsequent application to a general coded aperture system in order to gain a significant improvement in the field of view without compromising the angular resolution.

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