Optical implementation of reference phase-encoded fringe-adjusted joint transform correlation

M. S. Alam; E. Horache

doi:10.1117/12.617875

10 September 2005 Optical implementation of reference phase-encoded fringe-adjusted joint transform correlation

M. S. Alam, E. Horache

Proceedings Volume 5908, Optical Information Systems III; 590814 (2005) https://doi.org/10.1117/12.617875
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

In this paper, we propose a new optical implementation for reference-phase-encoded joint transform correlation technique for efficient multiple target detection. The proposed method employs phase encoding for the reference image and nonlinear Fourier plane apodization for optimizing the detection performance. The reference phase-encoded joint transform Correlator (JTC) overcomes false target detection by eliminating the false correlation peaks while alleviating the effects of noise and other artifacts in just one-step thus ensuring higher processing speed. This technique yields only one peak per target instead of a pair of peaks produced by alternate JTCs. An all-optical implementation for the reference phase-encoded JTC technique is proposed and experimental results are presented.

Citation Download Citation

M. S. Alam and E. Horache "Optical implementation of reference phase-encoded fringe-adjusted joint transform correlation", Proc. SPIE 5908, Optical Information Systems III, 590814 (10 September 2005); https://doi.org/10.1117/12.617875

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KEYWORDS

Joint transforms

Optical correlators

Target detection

Binary data

CCD cameras

Computer programming

Fourier transforms

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