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General I and Q data processing on a multichannel AO system

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Abstract

A multichannel space-integrating acoustooptic (AO) correlator is discussed with attention to its frequency selectivity and its ability to produce complex correlations. General I and Q channel data are considered. By using two properly tilted acoustooptic cells, the system allows frequency selectivity, a complex correlator, and coherent and noncoherent demodulation. By using one multichannel AO cell, we achieve minicorrelations, and by properly adding several such correlations we can process signals of larger duration and time–bandwidth product. Applications for this architecture in synchronization and demodulation are described and include its use in processing frequency-hopped encoded data.

© 1986 Optical Society of America

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