NASA NTRS · 19770000061
Hybrid optical/digital detector
Abstract
Device for automatic-diffraction pattern recognition is designed around concentric-ring fiber-optic array. Coherent light passes through film-image transparency and lens producing Fourier transform of image. Transform is converted to digital data, the basis of diffraction-pattern recognition program performed by computer.
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Shackelford, R. G., Walsh, J. R., Jr.. 1977-06-01. Hybrid optical/digital detector. https://ntrs.nasa.gov/citations/19770000061
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