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Proceedings Paper

Investigation on the correction for the cooling nonuniformity of IR detector arrays
Author(s): Jianxun Zhou; Dianxiu Wei; Shicai Liu; Baomin Zhang
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Paper Abstract

In this paper we have deduced the theoretical formulae which describe the correction of detectivity nonuniformity introduced by cooling -- nonuniformity of the detector array, and we point out that the fixed pattern noise arising from the difference of D* may be corrected by amending the magnification of each detector element respectively. However, the color noise relating spectrum distribution of input image and spectrum detectivity nonuniformity of the detector element cannot be corrected by a similar method. According to the varying tendency of D* ((lambda) , T) in different temperature, we have explored the method of the cut-off filter, which makes use of the linear relation between D* ((lambda) , T) and T in certain spectrum range, and the probability of removing color noise arising from cooling nonuniformity. We have also analyzed the characteristic of this method and its limitation of practical applicability.

Paper Details

Date Published: 1 April 1993
PDF: 6 pages
Proc. SPIE 1982, Photoelectronic Detection and Imaging: Technology and Applications '93, (1 April 1993); doi: 10.1117/12.142036
Show Author Affiliations
Jianxun Zhou, East China Institute of Technology (China)
Dianxiu Wei, East China Institute of Technology (China)
Shicai Liu, East China Institute of Technology (China)
Baomin Zhang, East China Institute of Technology (China)


Published in SPIE Proceedings Vol. 1982:
Photoelectronic Detection and Imaging: Technology and Applications '93

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