Time-integrating compact hybrid optical processor for SAR image formation

Carl C. Aleksoff; Nikola S. Subotic; Ivan Cindrich

doi:10.1117/12.139929

24 August 1992 Time-integrating compact hybrid optical processor for SAR image formation

Carl C. Aleksoff, Nikola S. Subotic, Ivan Cindrich

Proceedings Volume 1704, Advances in Optical Information Processing V; (1992) https://doi.org/10.1117/12.139929
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

The development and airborne demonstration of a compact realtime optical processor for synthetic aperture radar (SAR) image formation under the DARPA TOPS program is described. The ERIM spotlight mode SAR system and its processing requirements are presented. It is shown that a 2-D Fourier transforming time-integrating interferometrically based optical processor is an attractive solution to the processing requirements. The optical processor uses a modulated laser diode for radar signal insertion, crossed acousto-opto scanners for 2-D scanning, a modified Köster interferometer for fringe generation, fast detector arrays for light detection and integration, and accumulating frame grabbers to build up the dynamic range of the image. Analysis, simulation, and laboratory experimental results are presented.

Citation Download Citation

Carl C. Aleksoff, Nikola S. Subotic, and Ivan Cindrich "Time-integrating compact hybrid optical processor for SAR image formation", Proc. SPIE 1704, Advances in Optical Information Processing V, (24 August 1992); https://doi.org/10.1117/12.139929

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