Development of a prototype underwater acostic and motion recorder for the Ganges river dolphin
Development of a prototype underwater acostic and motion recorder for the Ganges river dolphin
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为恒河豚开发水下声学和运动记录仪原型
DOI：
10.1109/oceans.2014.7003248
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Junichi Kojima・Harumi Sugimatsu・Tamaki Ura・Rajendar Bahl・Sandeep Behera・Kenji Nagahashi
中科院分区：
文献类型：
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作者：
Junichi Kojima・Harumi Sugimatsu・Tamaki Ura・Rajendar Bahl・Sandeep Behera・Kenji Nagahashi
为了研究恒河海豚的咔哒声频率和身体运动，作者开始研制一种微型数据记录仪，该记录仪可以附着在海豚身上，记录24小时内海豚的咔哒声和3D身体运动。2014年开发了一个由开发的水听器单元和其他通用设备组成的原型。该系统安装在AUV上，并在2014年3月进行的AUV海上试验中对其性能进行了初步测试。海上试验的结果是，数据记录仪记录的运动与AUV井记录的运动相对应。同时记录了水下航行器推进器和水下航行器声学设备发出的声音信号。这意味着这个原型数据记录器有足够的性能来记录海豚的运动和咔哒声。此外，该数据记录仪也是评估水下系统（如auv或水声系统）在实际操作条件下的噪声水平的有用工具。
To investigate the clicking frequency and the body motion of the Ganges river dolphin, the authors started to develop a micro data logger that can be attached to the dolphin body and record not only the dolphin's clicks but also the 3D body motion over a 24 hour period. A prototype that consists of a developed hydrophone unit and other general-purpose devices was developed in 2014. The system was mounted on an AUV and its performance was initially tested during the AUV sea trials that were carried out in March 2014. As a result of the sea trials, the motion recorded by the data logger was corresponding to the motion recorded by the AUV well. Sound signals generated from the thrusters of the AUV and the acoustic equipment of the AUV was also recorded. It means that this proto-type data logger has enough performance to record dolphin's motion and clicks sounds. In addition, this data logger is also a useful tool for the evaluation of the noise level of underwater systems such as AUVs or underwater acoustic systems under actual operating conditions.