Multi-function acousto-optic signal processor

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Date
1998-08-25
Authors
Riza, Nabeel A.
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Society of Photo-Optical Instrumentation Engineers (SPIE)
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Abstract
A novel two dimensional acousto-optic processor is introduced for a variety of two dimensional signal processing tasks that include ambiguity function and range-doppler processing, two dimensional raster format high resolution signal spectrum analysis, and triple correlation function generation. The optical design is based on an optically efficient, in-line, high stability, two dimensional interferometer using four acousto-optic devices. Via the simple technique of Bragg cell carrier offset adjustments, the processor can generate the desired interferometric output on a chosen spatial carrier that is required for bias removal and electronic post-processing. The processor has bandwidth limitations based on the type of Bragg cells used in the system.A novel two dimensional acousto-optic processor is introduced for a variety of two dimensional signal processing tasks that include ambiguity function and range-doppler processing, two dimensional raster format high resolution signal spectrum analysis, and triple correlation function generation. The optical design is based on an optically efficient, in-line, high stability, two dimensional interferometer using four acousto-optic devices. Via the simple technique of Bragg cell carrier offset adjustments, the processor can generate the desired interferometric output on a chosen spatial carrier that is required for bias removal and electronic post-processing. The processor has bandwidth limitations based on the type of Bragg cells used in the system.
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Keywords
Signal processing , Bragg cells , Acousto-optics , Adaptive optics , Modulation , Acoustics , Sensors
Citation
Riza, N. A. (1998) 'Multi-function acousto-optic signal processor', Proceedings of SPIE, 3388, Advances in Optical Information Processing VIII, Aerospace/Defense Sensing and Controls, Orlando, Florida, United States. doi: 10.1117/12.319411
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© 1998 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.