Coastal acoustic tomography system and its field application
Coastal acoustic tomography system and its field application
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DOI：
10.1109/joe.2002.1002483
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发表时间：
2002-04-01
影响因子：
4.1
通讯作者：
Takasugi, Y
中科院分区：
文献类型：
--
作者：
Yamoaka, H;Kaneko, A;Takasugi, Y
海岸声学层析成像系统（CATS），由五个系泊声学站组成，已建成用于测量流场。该系统是在考虑到特殊考虑的情况下开发的，包括在多个声学站之间的系统时钟定时的同步中使用全球定位系统时钟信号，以及使用不同编码的Gold序列来从接收信号中识别对应于各个站的声学信号。CATS已成功地应用于近海强非线性潮流结构的测绘。尽管有限的空间分辨率所造成的不充分的声音传输数据，二维潮涡的增长，平移和衰减过程的功能重建通过逆分析得到的声走时之间的站对。可见，CATS是测量近海变流场的有力工具。
The coastal acoustic tomography system (CATS), composed of five moored acoustic stations, has been constructed to measure current fields. The system is developed with special considerations in mind, including the use of Global Positioning System clock signals in the synchronization of the system clock timing among the multiple acoustic stations, and the use of the differently coded Gold sequences to identify the acoustic signals corresponding to individual stations from a received signal. The CATS was successfully applied to map the structure of strongly nonlinear tidal currents in the coastal sea. In spite of the limited spatial resolution caused by inadequate sound transmission data, the two-dimensional tidal vortices features of growth, translation, and decay processes are reconstructed through an inverse analysis of the acoustic travel time obtained among the station pairs. It is evident that the CATS is a powerful tool for measuring variable current fields generated in the coastal seas.