Designing quantitative echo sounders
Designing quantitative echo sounders
复制标题
设计定量回声测深仪
DOI：
10.1121/1.401297
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
M. Furusawa
中科院分区：
文献类型：
--
作者：
M. Furusawa
本文介绍了一种主要用于渔业资源调查的定量回声测深仪的设计方法。定量回声测深仪的设计必须根据特定的标准，如最小误差，考虑到目的，外部条件和几个声学特性。在设计过程中所需的声学特性，例如，鱼的散射特性，简要回顾。在主要部分中，描述了确定接收机各级的脉冲宽度、带宽、工作频率、换能器直径和增益分配的方法。为了确定基本参数，本文提出了一种方便的“万有参数”。该图也适用于音响用户。文中给出了该方法在两种测深仪中的应用。本文讨论了定量回声测深仪的最佳频率，并指出目前世界上普遍使用的38kHz频率是一个合理的频率。
A procedure for designing quantitative echo sounders, whose main purpose is fisheries resource surveys, is described. The quantitative echo sounder must be designed under the specific criteria, such as minimum error, taking into account the purpose, external conditions, and several acoustic characteristics. The acoustic characteristics needed in the design procedure, for example, the scattering properties of fish, are reviewed briefly. In the main part, the method to determine the pulse width, bandwidth, operating frequency, transducer diameter, and gain allocation for each stage of the receiver is described. A convenient ‘‘universal diagram’’ is introduced for determining the basic parameters. The diagram serves also for users of sounders. Application of the method to two kinds of sounders is demonstrated. The optimum frequency for quantitative echo sounders is discussed and the frequency of 38 kHz, being used worldwide, is shown to be a reasonable frequency.