Estimation of Fish School Volume Using Omnidirectional Multi-Beam Sonar: Scanning Modes and Algorithms
Estimation of Fish School Volume Using Omnidirectional Multi-Beam Sonar: Scanning Modes and Algorithms
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DOI：
10.1143/jjap.45.4868
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发表时间：
2006-05
影响因子：
1.5
通讯作者：
Yong Tang;K. Iida;T. Mukai;Y. Nishimori
中科院分区：
文献类型：
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作者：
Yong Tang;K. Iida;T. Mukai;Y. Nishimori
以前的研究已经导致了定量全向声纳（FSV 30研究版，Furuno）使用64多波束和24 kHz的中心工作频率。目前正在研究这种声纳在渔业资源评估方面的实际应用。本文介绍了这项研究的一部分，即，使用不同声纳扫描模式估计鱼群体积的方法。为了确定其适用于各种目的，我们进行了模拟，以测量散射聚集;通过测量充满海水的气球的体积来验证模拟。一个实际的调查，也模拟了一个直径为20米的球形散射聚集体，并使用不同的扫描模式检查其体积。我们的研究结果表明，一个半圆形的巡航模式是更适合于测量鱼群体积比圆形模式，并使用锚定仪器扫描模式提供了更大的精度比巡航扫描模式。
Previous studies have resulted in a quantitative omnidirectional sonar (FSV30 research version, Furuno) using 64 multi-beams and a 24 kHz center operating frequency. The practical applications of this sonar are currently being studied with regard to fisheries resource assessment. This paper presents one part of this research, i.e., methods for estimating fish school volume using different sonar scanning modes. To determine its suitability for various purposes, we conducted a simulation to measure scatter aggregation; the simulation was validates by measuring the volume of a balloon filled with seawater. A practical survey was also simulated for spherical scatter aggregation with a 20 m diameter, and its volume was examined using different scanning modes. Our results indicate that a semicircular cruise mode is more suitable than a circular mode for measuring fish school volume, and that using an anchored instrument scanning mode provides greater accuracy than a cruising scanning mode.