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Proceedings Paper

Optical processing for self-cohering of phased-array imaging signals
Author(s): Robert T. Weverka; Kelvin H. Wagner; Anthony W. Sarto
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Paper Abstract

We describe three real-time optical processing systems, for imaging radar, that form the array phase function and produce the radar image from the incoming signals. The first is an implementation of the Steinberg algorithm where we have modified the data format by frequency multiplexing the range information to allow for the data from all range bins to be present simultaneously. The second implementation uses this same input format, but provides hysteresis on the point scatterer used to calibrate the array. This allows for moving radar arrays where the point used to calibrate the array may be time varying. Finally we describe a self oscillating phase conjugate resonator, with a coherent optical to RF converter inside the cavity. This is a hybrid optical-microwave oscillator that adapts to the incoming signal.

Paper Details

Date Published: 2 December 1992
PDF: 14 pages
Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); doi: 10.1117/12.138425
Show Author Affiliations
Robert T. Weverka, Univ. of Colorado/Boulder (United States)
Kelvin H. Wagner, Univ. of Colorado/Boulder (United States)
Anthony W. Sarto, Univ. of Colorado/Boulder (United States)


Published in SPIE Proceedings Vol. 1703:
Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III
Shi-Kay Yao; Brian M. Hendrickson, Editor(s)

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