| 渔业声学数据后处理中积分阈的选择与优化Ⅰ:目标离散分布状态下积分阈的确定 |
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| 引用本文： | 张俊,王新良,赵宪勇,李显森.渔业声学数据后处理中积分阈的选择与优化Ⅰ:目标离散分布状态下积分阈的确定[J].海洋水产研究,2011,32(4):41-47. |
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| 作者姓名： | 张俊 王新良 赵宪勇 李显森 |
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| 作者单位： | 1. 农业部海洋渔业资源可持续利用重点开放实验室 山东省渔业资源与生态环境重点实验室 中国水产科学研究院黄海水产研究所,青岛266071;上海海洋大学海洋科学学院,201306
2. 农业部海洋渔业资源可持续利用重点开放实验室 山东省渔业资源与生态环境重点实验室 中国水产科学研究院黄海水产研究所,青岛,266071 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金(2010-ts-15); 2010年农业行业标准制定项目(448)共同资助 |
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| 摘 要： | 积分阈是渔业声学数据后处理中对回声信号进行积分的临界值,是参与积分的最弱回声信号的体积反向散射强度.通过合理设置积分阈,能在保留目标信号的同时有效地消除噪音和非目标回声信号,从而提高渔业资源声学评估的准确性.为研究目标离散分布状态下选择和优化积分阈的方法,推导了单体目标体积反向散射强度与目标强度之间的函数关系,提出了利...
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| 关 键 词： | 积分阈 目标强度 体积反向散射强度 目标强度阈值 离散分布 |
Definition and optimization of integration threshold in the post-processing of fisheries acoustic data Ⅰ: Determination of integration threshold for scattered distribution |
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| ZHANG Jun,WANG Xin-liang,ZHAO Xian-yong,LI Xian-sen.Definition and optimization of integration threshold in the post-processing of fisheries acoustic data Ⅰ: Determination of integration threshold for scattered distribution[J].Marine Fisheries Research,2011,32(4):41-47. |
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| Authors: | ZHANG Jun WANG Xin-liang ZHAO Xian-yong LI Xian-sen |
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| Institution: | ZHANG Jun1,2 WANG Xin-liang1 ZHAO Xian-yong1 LI Xian-sen1(1 Key Laboratory for Sustainable Utilization of Marine Fishery Resources,Ministry of Agriculture,Key Laboratory for Fishery Resources and Eco-Environment,Shandong Province,Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071)(2 Marine Sciences College,Shanghai Ocean University,201306) |
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| Abstract: | Integration threshold is the critical signal level that governs whether or not an echo signal will be included in the echo integration during the post-processing of fisheries acoustic data.It is the Volume Backscattering Strength(VBS) of the weakest echo signal that will be involved in the echo integration process.An appropriate integration threshold may effectively remove noise and non-target signals while keep the signals from target species intact,thus improve the accuracy of acoustic estimation of fishe... |
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| Keywords: | Integration threshold Target strength Volume backscattering strengthTarget strength threshold Scattered distribution |
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