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Proceedings Paper

Comparative noise performance of a coded aperture spectral imager
Author(s): Jonathan Piper; Peter Yuen; Peter Godfree; Mengjia Ding; Umair Soori; Senthurran Selvagumar; David James
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Paper Abstract

Novel types of spectral sensors using coded apertures may offer various advantages over conventional designs, especially the possibility of compressive measurements that could exceed the expected spatial, temporal or spectral resolution of the system. However, the nature of the measurement process imposes certain limitations, especially on the noise performance of the sensor. This paper considers a particular type of coded-aperture spectral imager and uses analytical and numerical modelling to compare its expected noise performance with conventional hyperspectral sensors. It is shown that conventional sensors may have an advantage in conditions where signal levels are high, such as bright light or slow scanning, but that coded-aperture sensors may be advantageous in low-signal conditions.

Paper Details

Date Published: 25 October 2016
PDF: 10 pages
Proc. SPIE 9992, Emerging Imaging and Sensing Technologies, 99920G (25 October 2016); doi: 10.1117/12.2240926
Show Author Affiliations
Jonathan Piper, Defence Science and Technology Lab. (United Kingdom)
Peter Yuen, Cranfield Univ. (United Kingdom)
Peter Godfree, Defence Science and Technology Lab. (United Kingdom)
Mengjia Ding, Cranfield Univ. (United Kingdom)
Umair Soori, Cranfield Univ. (United Kingdom)
Senthurran Selvagumar, Cranfield Univ. (United Kingdom)
David James, Cranfield Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 9992:
Emerging Imaging and Sensing Technologies
Keith L. Lewis; Richard C. Hollins, Editor(s)

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