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Proceedings Paper

Acousto-optic system for frequency and phase demodulation
Author(s): Matthew Hicks; Christopher D. Reeve
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Paper Abstract

A simple acousto-optic system is described that is capable of demodulating frequency and phase-modulated signals using a bicell photodetector. The performance of the system is modeled showing that, by taking the sum and difference of the outputs from the two bicell elements, it is possible to identify and demodulate a wide range of different types of modulation without any a priori information. Thus the technique is well suited for surveillance receiver and ESM applications. In particular it is shown that BPSK, QPSK, offset keyed QPSK, differential QPSK, continuous phase FSK (including MSK) and ordinary FSK all give unique and easily identifiable signatures. Some preliminary experimental results are presented, which are in good agreement with the modeled results.

Paper Details

Date Published: 12 June 1996
PDF: 8 pages
Proc. SPIE 2754, Advances in Optical Information Processing VII, (12 June 1996); doi: 10.1117/12.243147
Show Author Affiliations
Matthew Hicks, Univ. of Plymouth (United Kingdom)
Christopher D. Reeve, Univ. of Plymouth (United Kingdom)


Published in SPIE Proceedings Vol. 2754:
Advances in Optical Information Processing VII
Dennis R. Pape, Editor(s)

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