IEELECTURE7.pdf (4.15 MB)
Hybrid digital/optical computer systems
presentation
posted on 2023-06-08, 21:16 authored by Chris ChatwinChris Chatwin, Rupert YoungRupert Young, David Budgett, Phil BirchPhil Birch, Frederick Claret-Tournier, Jim SharpA 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 × 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.
History
Publication status
- Published
File Version
- Published version
Presentation Type
- lecture
Event name
Institution of Electrical Engineers - SeminarEvent location
Arundel - West SussexEvent type
workshopEvent date
21st November 2000Department affiliated with
- Engineering and Design Publications
Full text available
- Yes
Peer reviewed?
- No
Legacy Posted Date
2015-06-29First Open Access (FOA) Date
2015-06-29First Compliant Deposit (FCD) Date
2015-06-27Usage metrics
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