An Optical Wideband Ambiguity Function Generator

Bruce A. Horwitz

doi:10.1117/12.955685

8 December 1977 An Optical Wideband Ambiguity Function Generator

Bruce A. Horwitz

Proceedings Volume 0118, Optical Signal and Image Processing; (1977) https://doi.org/10.1117/12.955685
Event: 21st Annual Technical Symposium, 1977, San Diego, United States

Abstract

A highly specialized optical processing system for generating ambiguity surfaces is described. The surfaces are generated by a series of cross-correlations between two raster-recorded, large time-bandwidth signals, one of which has been doppler compensated. High data throughput is achieved by performing nearly all necessary operations in parallel, optically. After initial detection, the signals are stored in raster format on an optical data buffer. Doppler compensation is effected by a newly designed, incoherent, Optical Doppler Transformation system which provides a controlled, variable anamorphic compression or expansion of the entire signal raster, and cross correlations are performed by a coherent optical correlator which has real time, optically addressed, spatial light modulators in the input and filter planes. This paper discusses the operation of the components of this ambiguity function generator, with particular emphasis on the new Optical Doppler Transformation system, and presents throughput performance predictions.

Citation Download Citation

Bruce A. Horwitz "An Optical Wideband Ambiguity Function Generator", Proc. SPIE 0118, Optical Signal and Image Processing, (8 December 1977); https://doi.org/10.1117/12.955685

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KEYWORDS

Doppler effect

Raster graphics

Signal processing

Prisms

Optical correlators

Signal detection

Image processing

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