Compact real-time interferometric Fourier transform processors

Carl C. Aleksoff; Nikola S. Subotic

doi:10.1117/12.23430

27 December 1990 Compact real-time interferometric Fourier transform processors

Carl C. Aleksoff, Nikola S. Subotic

Proceedings Volume 1347, Optical Information Processing Systems and Architectures II; (1990) https://doi.org/10.1117/12.23430
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

The spatially-scanning, 2D, time-integrating hybrid interferometric processors presented employ directly-modulated CW laser diodes as input sources and are applicable to complex SAR data processing in real time. Crossed acoustooptic cells scan the input signal over a virtual 2D input space, and an optical interference pattern is detected with a solid-state detector array camera. Continuous transfer of the frames of integrated interference from the camera to a digital image processor, overall dynamic range is increased over that of the camera alone. Envelope detection in the display circuitry generates a continuous real-time representation of image magnitude.

Citation Download Citation

Carl C. Aleksoff and Nikola S. Subotic "Compact real-time interferometric Fourier transform processors", Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); https://doi.org/10.1117/12.23430

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