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Optical signal processingThe article discusses several optical configurations used for signal processing. Electronic-to-optical transducers are outlined, noting fixed window transducers and moving window acousto-optic transducers. Folded spectrum techniques are considered, with reference to wideband RF signal analysis, fetal electroencephalogram analysis, engine vibration analysis, signal buried in noise, and spatial filtering. Various methods for radar signal processing are described, such as phased-array antennas, the optical processing of phased-array data, pulsed Doppler and FM radar systems, a multichannel one-dimensional optical correlator, correlations with long coded waveforms, and Doppler signal processing. Means for noncoherent optical signal processing are noted, including an optical correlator for speech recognition and a noncoherent optical correlator.
Document ID
19780053990
Document Type
Other - Collected Works
Authors
Casasent, D. (Carnegie-Mellon University Pittsburgh, Pa., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Funding Number(s)
PROJECT: NR PROJECT 048-600
PROJECT: NR PROJECT 350-011
CONTRACT_GRANT: NAS8-28737
Distribution Limits
Public
Copyright
Other