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Optical Engineering

Nonlinear joint fractional Fourier-transform correlator based on the threshold-decomposition preprocessing
Author(s): Qu Wang; Li Chen; Jin Yun Zhou; Qinghua Lin
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Paper Abstract

The morphological joint fractional Fourier transform correlator (MJFTC), as a modified nonlinear joint fractional Fourier transform correlator (JFTC), is introduced in this paper. An optoelectronic setup that can implement such a nonlinear JFTC is advised and constructed. We investigate the correlation properties of the MJFTC using computer simulation and optical experiments. Numerical and experimental results show that the MJFTC exhibits remarkable improvement in terms of discriminability and peak sharpness compared with the classic JFTC. Moreover, the MJFTC provides better noise tolerance to the salt-and-pepper noise or normally distributed white additive noise than the JFTC and the other nonlinear processing or fractional-order filtering JFTC.

Paper Details

Date Published: 1 November 2011
PDF: 13 pages
Opt. Eng. 50(11) 118201 doi: 10.1117/1.3655351
Published in: Optical Engineering Volume 50, Issue 11
Show Author Affiliations
Qu Wang, Guangdong Univ. of Technology (China)
Li Chen, Guangdong Univ. of Technology (China)
Jin Yun Zhou, Guangdong Univ. of Technology (China)
Qinghua Lin, Guangdong Univ. of Technology (China)

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