Abstract

Analog optical signal processing of complex radio-frequency signals for range-Doppler radar information is theoretically described and experimentally demonstrated using crystalline optical memory materials and off-the-shelf photonic components. A model of the range-Doppler processing capability of the memory material for the case of single-target detection is presented. Radarlike signals were emulated and processed by the memory material; they consisted of broadband (>1GHz), spread-spectrum, pseudorandom noise sequences of 512bits in length, which were binary phase-shift keyed on a 1.9GHz carrier and repeated at 100kHz over 7.5ms. Delay (range) resolution of 8ns and Doppler resolution of 130Hz over 100kHz were demonstrated.

© 2006 Optical Society of America

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