Journal
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
Volume 141, Issue 4, Pages EL388-EL394Publisher
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.4980006
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Funding
- NOAA [NA10NOS4000073]
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An extended calibration target has been developed for calibrating the intensity output of a multibeam echo sounder (MBES). The target was constructed of chain links arranged similar to a curtain, providing an extended surface target with a mean scattering strength of -17.8dB at 200 kHz. The target was used to calibrate a 200kHz MBES, and the MBES was subsequently used to collect seafloor backscatter over sand and gravel seafloors. Field results were compared with calibrated split-beam echo sounder measurements at an incidence angle of 45 degrees. The results suggest that the chain target is a viable MBES calibration tool. (C) 2017 Acoustical Society of America
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