Experimental systems implementation of a hybrid optical-digital correlator

作     者：Sharp, JH MacKay, NE Tang, PC Watson, IA Scott, BF Budgett, DM Chatwin, CR Young, RCD Tonda, S Huignard, JP Slack, TG Collings, N Pourzand, AR Duelli, M Grattarola, A Braccini, C 

作者机构：Univ Sussex Sch Engn Brighton BN1 9Q2 E Sussex England Thomson CSF Cent Rech Lab F-91404 Orsay France British Aerosp Operat Ltd Sowerby Res Ctr Dept Opt & Laser Technol Bristol BS12 7QW Avon England Univ Neuchatel Inst Microtechnol CH-2000 Neuchatel Switzerland Univ Genoa Dept Commun Comp & Syst Sci I-16145 Genoa Italy Univ Glasgow Dept Mech Engn Laser & Opt Syst Engn Ctr Glasgow G12 8QQ Lanark Scotland 

出 版 物：《APPLIED OPTICS》 (应用光学)

年 卷 期：1999年第38卷第29期

页      面：6116-6128页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：two-dimensional Fourier transform Cross correlation Charge Coupled Device camera frame period Optical data storage parallel processing architecture Planing Phase high fidelity VIDEO FRAMES Fast Fourier transform 

摘      要：A high-speed hybrid optical-digital correlator system was designed, constructed, modeled, and demonstrated experimentally. This correlator is capable of operation at approximately 3000 correlations/s. The input scene is digitized at a resolution of 512 x 512 pixels and the phase information of the two-dimensional fast Fourier transform calculated and displayed in the correlator filter plane at normal video frame rates. High-fidelity reference template images are stored in a phase-conjugating optical memory placed at the nominal input plane of the correlator and reconstructed with a high-speed acousto-optic scanner;this allows for cross correlation of the entire reference data set with the input scene within one frame period. A high-speed CCD camera is used to capture the correlation-plane image, and rapid correlation-plane processing is achieved with a parallel processing architecture. (C) 1999 Optical Society of America.