Digital Correlation By Optical Convolution/Correlation

Joel Trimble; David Casasent; Demetri Psaltis; Frank Caimi; Mark Carlotto; Deborah Neft

doi:10.1117/12.959239

24 December 1980 Digital Correlation By Optical Convolution/Correlation

Joel Trimble, David Casasent, Demetri Psaltis, Frank Caimi, Mark Carlotto, Deborah Neft

Proceedings Volume 0241, Real-Time Signal Processing III; (1980) https://doi.org/10.1117/12.959239
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

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.

Citation Download Citation

Joel Trimble, David Casasent, Demetri Psaltis, Frank Caimi, Mark Carlotto, and Deborah Neft "Digital Correlation By Optical Convolution/Correlation", Proc. SPIE 0241, Real-Time Signal Processing III, (24 December 1980); https://doi.org/10.1117/12.959239

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