High-resolution measurement of a bottlenose dolphin's (Tursiops truncatus) biosonar transmission beam pattern in the horizontal plane.

@article{Finneran2014HighresolutionMO,
  title={High-resolution measurement of a bottlenose dolphin's (Tursiops truncatus) biosonar transmission beam pattern in the horizontal plane.},
  author={James J Finneran and Brian K. Branstetter and Dorian S. Houser and Patrick W. B. Moore and Jason Mulsow and Cameron Martin and Shaun Perisho},
  journal={The Journal of the Acoustical Society of America},
  year={2014},
  volume={136 4},
  pages={2025-38}
}
Previous measurements of toothed whale echolocation transmission beam patterns have utilized few hydrophones and have therefore been limited to fine angular resolution only near the principal axis or poor resolution over larger azimuthal ranges. In this study, a circular, horizontal planar array of 35 hydrophones was used to measure a dolphin's transmission beam pattern with 5° to 10° resolution at azimuths from -150° to +150°. Beam patterns and directivity indices were calculated from both the… CONTINUE READING
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