Heaton John L, Rice Glen, Weber Thomas C
Center for Coastal and Ocean Mapping, University of New Hampshire, Durham, New Hampshire 03824, USA
J Acoust Soc Am. 2017 Apr;141(4):EL388. doi: 10.1121/1.4980006.
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 -17.8 dB at 200 kHz. The target was used to calibrate a 200 kHz 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°. The results suggest that the chain target is a viable MBES calibration tool.
已开发出一种用于校准多波束回声测深仪（MBES）强度输出的扩展校准目标。该目标由类似窗帘排列的链节构成，提供了一个扩展表面目标，在200kHz时平均散射强度为-17.8dB。该目标用于校准一台200kHz的MBES，随后该MBES被用于收集沙质和砾石质海底的海底后向散射。将现场结果与在45°入射角下校准的分裂波束回声测深仪测量结果进行了比较。结果表明，链状目标是一种可行的MBES校准工具。
