1 June 1996 Effects of acousto-optic correlator bandwidth on coded pulse compression
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Optical Engineering, 35(6), (1996). doi:10.1117/1.600733
Abstract
The effects of limited frequency bandwidth on the response of space-integrating acousto-optic correlators are considered. They are studied in the classical scope of pseudorandom sequence correlation, used in spread spectrum systems, in terms of the SNR enhancement in the correlator compared to the ideal (infinite bandwidth correlator) enhancement figure. An analytical approach using filtering of both useful signals and noise at the correlator input is developed. Numerical computations are drawn that show a loss of 4 dB when the code chip rate used is equal to three times the correlator bandwidth. Experimental results obtained for an acousto-optic cell are also presented and agree well with the theoretical results.
Bazzi Oussama, Marc G. Gazalet, Roger J. Torguet, J. M. Rouvaen, C. Bruneel, "Effects of acousto-optic correlator bandwidth on coded pulse compression," Optical Engineering 35(6), (1 June 1996). http://dx.doi.org/10.1117/1.600733
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KEYWORDS
Optical correlators

Acousto-optics

Signal to noise ratio

Electronic filtering

Interference (communication)

Signal processing

Acoustics

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