【摘要】 介绍了2005—2008年在国内内陆水体鱼类资源调查中,EY60回声探测仪的使用及其效果。该探测仪利用分裂波束(Split-beam)技术,通过交叉过滤(Cross-filter)及轨迹跟踪分析(Tracking analysis),实现了对鱼类个体的自动判别及计数;另外对使用中噪声消减、渔获物调查数据的参考等进行了说明;强调回声探测仪自主品牌产品研发的必要性。更多还原

【Abstract】 With the experience of using Simrad EY60 echosounder in the inland water fish resource investigation from 2005,we introduced the operation and results of EY60.Basing on Split-beam technology,EY60 system also developed cross-filter and tracking analysis method,make it true of auto single target detect and count,which would be widely used in the research of fish ecology.In this article the diminution of noise and the importance of reference with fishery data were discussed.In addition,the necessity and urgent of development self-owned brand echosounder was emphasized.更多还原