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Optimizing the directivity diagram of underwater acoustic wide band antennas

We describe the development of multisensor antennas in a specified band of frequencies using beamforming and processing techniques. This method is based on the spatial positioning of omnidirectional transducers and the use of specific professing in order to maintain the directivity diagram constant...

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Main Authors: Boizard, J.L., Legrand, F., Gonneau, E.
Format: Conference Proceeding
Language:English
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Legrand, F.
Gonneau, E.
description We describe the development of multisensor antennas in a specified band of frequencies using beamforming and processing techniques. This method is based on the spatial positioning of omnidirectional transducers and the use of specific professing in order to maintain the directivity diagram constant over the whole frequency band of interest. The digital signal processing algorithms associated with each transducer are based on RIF filters. The corresponding coefficients of the filters are determined by optimizing the desired antenna directivity diagram. We first present the method used, then the theoretical results together with those obtained during the experiment. Finally, we present some possibilities for making the hardware part of a real-time signal processing system suitable for such an antenna.
doi_str_mv 10.1109/UT.1998.670067
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ispartof Proceedings of 1998 International Symposium on Underwater Technology, 1998, p.93-97
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Acoustic transducers
Array signal processing
Digital filters
Digital signal processing
Frequency
Hardware
Real time systems
Signal processing algorithms
Underwater acoustics
Wideband
title Optimizing the directivity diagram of underwater acoustic wide band antennas
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