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Proceedings Paper

Digital Correlation By Optical Convolution/Correlation
Author(s): Joel Trimble; David Casasent; Demetri Psaltis; Frank Caimi; Mark Carlotto; Deborah Neft
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Paper Abstract

Attention is given to various methods by which the accuracy achieveable and the dynamic range requirements of an optical computer can be enhanced. A new time position coding acousto-optic technique for optical residue arithmetic processing is presented and experimental demonstration is included. Major attention is given to the implementation of a correlator operating on digital or decimal encoded signals. Using a convolution description of multiplication, we realize such a correlator by optical convolution in one dimension and optical correlation in the other dimension of a optical system. A coherent matched spatial filter system operating on digital encoded signals, a noncoherent processor operating on complex-valued digital-encoded data, and a real-time multi-channel acousto-optic system for such operations are described and experimental verifications are included.

Paper Details

Date Published: 24 December 1980
PDF: 6 pages
Proc. SPIE 0241, Real-Time Signal Processing III, (24 December 1980); doi: 10.1117/12.959239
Show Author Affiliations
Joel Trimble, Office of Naval Research (United States)
David Casasent, Carnegie Mellon University (United States)
Demetri Psaltis, Carnegie Mellon University (United States)
Frank Caimi, Carnegie Mellon University (United States)
Mark Carlotto, Carnegie Mellon University (United States)
Deborah Neft, Carnegie Mellon University (United States)

Published in SPIE Proceedings Vol. 0241:
Real-Time Signal Processing III
Tien F. Tao, Editor(s)

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