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Optical Engineering

Joint-transform correlator improved by means of the frequency-selective technique
Author(s): Chung Jung Kuo
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Paper Abstract

A frequency-selective technique is proposed to improve the performance of joint-transform correlators. In this technique, the useless part of the Fourier transform interference intensity for creating the correlation signal of the joint-transform correlator is removed. Two architectures to achieve this goal are also presented. It is shown that dramatic improvement (as large as 200%) in the autocorrelation peak amplitude of the joint-transform correlator is possible by means of the proposed technique. Similar to the bipolar joint-transform correlator, the bipolar frequency-selective joint-transform correlator has a delta-function-like autocorrelation signal. In addition, it provides similar discrimination ability and noise performance to the bipolar joint-transform correlator.

Paper Details

Date Published: 1 February 1994
PDF: 6 pages
Opt. Eng. 33(2) doi: 10.1117/12.153193
Published in: Optical Engineering Volume 33, Issue 2
Show Author Affiliations
Chung Jung Kuo, National Chung Cheng Univ. (Taiwan)


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