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.
Other - Collected Works
Casasent, D. (Carnegie-Mellon University Pittsburgh, Pa., United States)
August 9, 2013
January 1, 1978
INSTRUMENTATION AND PHOTOGRAPHY
PROJECT: NR PROJECT 048-600 PROJECT: NR PROJECT 350-011 CONTRACT_GRANT: NAS8-28737