Ultrafast Target Recognition via Super-Parallel Holograph Based Correlator, RAM and Associative Memory

Abstract : The overall objective of this project was to develop an ultrafast target recognition system using holographic techniques, as well as spin-off technologies with other applications. We report here a set of significant accomplishments towards this goal. These include: (1) demonstrations of shared hardware operation of a super-parallel holographic correlator and RAM, (2) demonstrations of an ultra-fast holographic stokesmeter for polarization imaging; (3) demonstrations of off-axis transmission and reflection holographic lenses for use in the super-parallel architecture; (4) demonstrations of a translation-invariant correlation of images stored via holographic angle-multiplexing in a thick photopolymer material; (5) development of a large-area, thick, optical quality holographic recording disc capable of storing up to 2 terabyte of data; (6) demonstration of real-time, pico-second speed, translation-invariant correlation using a novel photorefractive material, and (7) demonstration of automatic target recognition of targets in a view from arbitrary altitudes and orientations during the flight of a remote-controlled aerial vehicle.

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