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Hybrid digital/optical computer systems

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posted on 2023-06-08, 21:16 authored by Chris ChatwinChris Chatwin, Rupert YoungRupert Young, David Budgett, Phil BirchPhil Birch, Frederick Claret-Tournier, Jim Sharp
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 × 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 - Seminar

Event location

Arundel - West Sussex

Event type

workshop

Event date

21st November 2000

Department affiliated with

  • Engineering and Design Publications

Full text available

  • Yes

Peer reviewed?

  • No

Legacy Posted Date

2015-06-29

First Open Access (FOA) Date

2015-06-29

First Compliant Deposit (FCD) Date

2015-06-27

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