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Proceedings Paper

Multifunctional receiver using an acousto-optic spectrum analyzer: an example application and results
Author(s): Christopher Scott Anderson; Michael C. Zari; Reeder Noah Ward
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Paper Abstract

Low probability of intercept (LPI), spread-spectrum signals are becoming commonplace in both communication and radar systems. Cooperative receivers process these signals to provide large gains in the output signal-to-noise ratios (SNRs). Given the low signal power expected during reception and the lack of a priori signal knowledge, intercept receivers have difficulties in providing adequate detection of LPI signals. This detection problem is compounded when high power, narrow-band interference is simultaneously present with the LPI signal. A 512-channel acousto-optic spectrum analyzer is used in conjunction with digital processing to implement an autocorrelation-type receiver with interference rejection. Although difficult to implement in radio frequency (rf) or digital electronics, acousto- optic spectrum analyzers may provide a practical solution with sufficient dynamic range for the intercept application. Implementation and algorithm considerations are provided as well as simulated results. Initial experiments confirm LPI signal detection when the signal is minus 5 dB relative to noise and minus 40 dB relative to multiple narrowband interference sources.

Paper Details

Date Published: 12 June 1996
PDF: 9 pages
Proc. SPIE 2754, Advances in Optical Information Processing VII, (12 June 1996); doi: 10.1117/12.243125
Show Author Affiliations
Christopher Scott Anderson, Univ. of Florida (United States)
Michael C. Zari, Dynetics, Inc. (United States)
Reeder Noah Ward, Harris Corp. (United States)

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

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