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The use of wideband signals in the acoustic monitoring of hydrobionts

The use of wideband signals in the acoustic monitoring of hydrobionts Abstract A method is presented for the coherent detection of the signal scattered by a hydrobiont moving across the path of sound propagation from a wideband source against the background of the sum of an intense insonification signal and additive noise. The method consists of the calculation of a cross-correlation function of the signal at the receiver input and the scattered signal model constructed from the received signal by introducing the square-law time delay. It is shown theoretically and with numerical modeling that such a processing ensures a gain in the signal-to-noise ratio that is proportional to the square root of the bandwidth multiplied by the observation time. The efficiency of the method is demonstrated by the results of an experiment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

The use of wideband signals in the acoustic monitoring of hydrobionts

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References (2)

Publisher
Springer Journals
Copyright
2004 MAIK "Nauka/Interperiodica"
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/1.1739500
Publisher site
See Article on Publisher Site

Abstract

Abstract A method is presented for the coherent detection of the signal scattered by a hydrobiont moving across the path of sound propagation from a wideband source against the background of the sum of an intense insonification signal and additive noise. The method consists of the calculation of a cross-correlation function of the signal at the receiver input and the scattered signal model constructed from the received signal by introducing the square-law time delay. It is shown theoretically and with numerical modeling that such a processing ensures a gain in the signal-to-noise ratio that is proportional to the square root of the bandwidth multiplied by the observation time. The efficiency of the method is demonstrated by the results of an experiment.

Journal

Acoustical Physics – Springer Journals

Published: May 1, 2004

Keywords: Acoustics

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