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Proceedings Paper

Throughput comparison of optical and digital correlators for automatic target recognition
Author(s): Chao H. Huang; Gregory O. Gheen; Edward R. Washwell
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Paper Abstract

Correlation provides an effective approach for recognizing targets embedded in a large field of view containing noise and clutter. Correlation is implemented either digitally or optically. When implemented digitally, correlation (consisting ofrepetitive multiply and accumulation operations) is directly realized with digital multipliers and accumulators (MAC), specialized signal processors or general computers. When the input record length is long, digital correlation is implemented in the frequency domain. Fast correlation is achieved because of the existence of the computational efficient fast Fourier transform (FFT) algorithm and specialized hardware for the discrete Fourier transform (DFT).

Paper Details

Date Published: 1 November 1991
PDF: 12 pages
Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); doi: 10.1117/12.49730
Show Author Affiliations
Chao H. Huang, Lockheed Missiles & Space Co., Inc. (United States)
Gregory O. Gheen, Lockheed Missiles & Space Co., Inc. (United States)
Edward R. Washwell, Lockheed Missiles & Space Co., Inc. (United States)


Published in SPIE Proceedings Vol. 1564:
Optical Information Processing Systems and Architectures III
Bahram Javidi, Editor(s)

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