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Study on Acoustic Scattering Characteristics of Fish and Monitor System for Bred Fish in Offshore Fish Cage

Abstract

深水网箱养殖因其抗风浪、耐海流能力强、养殖容量大、高产高效、环保等优点成为目前国内外海洋水产养殖业可持续发展的必然趋势。然而,与传统网箱养殖比较,深水网箱养殖由于网箱所处水域深、鱼群活动空间大,肉眼不容易观察到网箱内鱼群的活动及网衣安全状态,一旦发生逃鱼,经济损失巨大。因此,如何对网衣安全、网箱内鱼群生长情况、鱼群量变化进行日常监测,当发现网衣破损、鱼群逃逸等异常状况时及时报警是深水网箱养殖推广过程中急需解决的一项关键技术。本文针对深水网箱养殖中急需解决的鱼群安全问题,开展了鱼类声学散射特性和鱼群量估计算法研究,设计并实现了一套深水网箱鱼群状态远程、实时声学监测系统。 论文主要内容: 1、...For its advantages of strong resistance to wind waves and tidal current, large breeding capacity, high efficiency and environmental protection, fish culturing in offshore fish cage becomes the developing trend of sustainable marine aquaculture industry at home and abroad. However, compared with the traditional fish culturing, it is difficult to observe fish school activity and the status of net cl...学位:理学博士院系专业:海洋与环境学院海洋学系_海洋物理学号:2242007015357

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