Acoustic backscattering from cylinders: near-field corrections

Authors

  • D.M.F. Chapman Defence Res. Establ. Atlantic, Dartmouth, NS, Canada
  • F.D. Cotaras Defence Res. Establ. Atlantic, Dartmouth, NS, Canada

Keywords:

acoustic field, acoustic wave scattering, backscatter, sonar, underwater sound, target strength, acoustic backscattering, near-field corrections, 30 to 36 kHz, Al cylinders

Abstract

In the course of making TS (target strength) measurements of hollow aluminum cylinders of length 91 cm and 28 cm in the frequency range 30-36 kHz, the authors realized that their measurements were being corrupted at beam aspect because the source and receiver were in the near-field of the target. Fortunately, they were able to increase the range and reduce this effect, but they also derived a correction to the near-field TS measurements that could be applied if sufficient range were unavailable. The derivation and application of this beam-aspect TS correction is the subject of the present work

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Published

1991-09-01

How to Cite

1.
Chapman D, Cotaras F. Acoustic backscattering from cylinders: near-field corrections. Canadian Acoustics [Internet]. 1991 Sep. 1 [cited 2022 Aug. 12];19(4):71-2. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/674

Issue

Section

Proceedings of the Acoustics Week in Canada