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High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton

Publication ,  Journal Article
Papazoglou, M; Krolik, JL
Published in: Journal of the Acoustical Society of America
January 1, 1996

This paper investigates the use of adaptive beamforming techniques to increase the performance of a sonar imaging system developed at the Scripps Institution of Oceanography to monitor the migration of zooplankton. The original system, known as Fish Television (FTV), images a volume using an 8 x 8 grid of beams in elevation and azimuth. Imaging currently performed with the FTV system is limited by a 2-deg resolution in both azimuth and elevation. In this paper, both a conventional delay-and-sum beamformer and a minimum variance adaptive beamformer are evaluated for use with the FTV sonar system to increase resolution and reduce sidelobe interference. Through simulation it is shown that by using adaptive beamforming, the image resolution can be improved to 1/2 deg in azimuth and elevation for targets with signal-to-noise ratios of at least 20 dB. Results using acoustic data from the Gulf of Eilat are compared to the original images of the FTV sonar system to illustrate the improvement in resolution, accuracy, and dynamic range achieved by adaptive beamforming.

Duke Scholars

Published In

Journal of the Acoustical Society of America

DOI

ISSN

0001-4966

Publication Date

January 1, 1996

Volume

100

Issue

6

Start / End Page

3621 / 3630

Related Subject Headings

  • Acoustics
 

Citation

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Chicago
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MLA
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Papazoglou, M., & Krolik, J. L. (1996). High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton. Journal of the Acoustical Society of America, 100(6), 3621–3630. https://doi.org/10.1121/1.417225
Papazoglou, M., and J. L. Krolik. “High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton.” Journal of the Acoustical Society of America 100, no. 6 (January 1, 1996): 3621–30. https://doi.org/10.1121/1.417225.
Papazoglou M, Krolik JL. High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton. Journal of the Acoustical Society of America. 1996 Jan 1;100(6):3621–30.
Papazoglou, M., and J. L. Krolik. “High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton.” Journal of the Acoustical Society of America, vol. 100, no. 6, Jan. 1996, pp. 3621–30. Scopus, doi:10.1121/1.417225.
Papazoglou M, Krolik JL. High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton. Journal of the Acoustical Society of America. 1996 Jan 1;100(6):3621–3630.

Published In

Journal of the Acoustical Society of America

DOI

ISSN

0001-4966

Publication Date

January 1, 1996

Volume

100

Issue

6

Start / End Page

3621 / 3630

Related Subject Headings

  • Acoustics