用参数声纳探测大西洋鲱鱼。

Detecting Atlantic herring by parametric sonar.

机构信息

Institute of Marine Research, P.O. Box 1870 Nordnes, 5817 Bergen, Norway.

出版信息

J Acoust Soc Am. 2010 Apr;127(4):EL153-9. doi: 10.1121/1.3336398.

PMID:20369983

Abstract

The difference-frequency band of the Kongsberg TOPAS PS18 parametric sub-bottom profiling sonar, nominally 1-6 kHz, is being used to observe Atlantic herring. Representative TOPAS echograms of herring layers and schools observed in situ in December 2008 and November 2009 are presented. These agree well with echograms of volume backscattering strength derived simultaneously with the narrowband Simrad EK60/18- and 38-kHz scientific echo sounder, also giving insight into herring avoidance behavior in relation to survey vessel passage. Progress in rendering the TOPAS echograms quantitative is described.

摘要

康斯伯格 TOPAS PS18 参量式次底剖面声纳的差频带，标称值为 1-6 kHz，正被用于观测大西洋鲱鱼。文中展示了 2008 年 12 月和 2009 年 11 月在现场观测到的鲱鱼层和鱼群的典型 TOPAS 反向散射声纳图谱。这些图谱与同时获得的 Simrad EK60/18 和 38 kHz 科学回声测深仪的体积反向散射强度的回波图谱吻合较好，这也使我们深入了解了鲱鱼在与调查船相遇时的回避行为。文中还介绍了使 TOPAS 回波图谱定量的进展。