High resolution beamforming applied to a DIFAR sonobuoy

Authors

  • D. Desrochers Royal Military College of Canada, STN FORCES, Kingston, Ont. K7K 7B4, Canada
  • R.F. Marsden Royal Military College of Canada, STN FORCES, Kingston, Ont. K7K 7B4, Canada

Abstract

High-resolution beamforming techniques have been successfully applied to DIFAR data to provided accurate directional information. Although the current processing techniques are adequate for most situations, the presence of multiple contacts, or strong directional noise, may hinder target detection, and localization. Simulations and experimental results from field data showed that EML provided the best overall results in terms of accuracy, peak-to-trough visibility and processing time, for a range of parameters. EIML improved the peak-to-trough difference at the expense of processing time, but in most cases, the weaker contact was already visible with EML, making the gain minimal. It was also found that EEV may produce spurious peaks, or create double peaks, in isolated cases. EEV is otherwise accurate, with EIEV providing marginal improvement.

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Published

1999-09-01

How to Cite

1.
Desrochers D, Marsden R. High resolution beamforming applied to a DIFAR sonobuoy. Canadian Acoustics [Internet]. 1999 Sep. 1 [cited 2021 Dec. 5];27(3):38-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1206

Issue

Section

Proceedings of the Acoustics Week in Canada