{"id":1264,"date":"2022-02-17T11:46:53","date_gmt":"2022-02-17T03:46:53","guid":{"rendered":"http:\/\/localhost\/wordpress\/?page_id=1264"},"modified":"2026-04-22T17:02:15","modified_gmt":"2026-04-22T09:02:15","slug":"%e6%b0%b4%e4%b8%8b%e5%99%aa%e9%9f%b3%e7%9b%a3%e6%b8%ac","status":"publish","type":"page","link":"https:\/\/www.comc.ncku.edu.tw\/en\/%e6%9c%80%e6%96%b0%e6%b6%88%e6%81%af\/%e8%a7%80%e6%b8%ac%e7%b3%bb%e7%b5%b1\/%e6%b0%b4%e4%b8%8b%e5%99%aa%e9%9f%b3%e7%9b%a3%e6%b8%ac\/","title":{"rendered":"Underwater Sound Monitoring System"},"content":{"rendered":"\t\t
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\nCoastal Ocean Monitoring Center, National Cheng Kung University (COMC, NCKU)<\/b><\/span><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Underwater Sound Monitoring System<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tUnderwater ambient noise\u00a0is an essential background parameter in the fields of\u00a0underwater acoustics\u00a0and\u00a0marine science. By understanding the local underwater noise environment, researchers can conduct studies related to\u00a0physical oceanography,\u00a0marine biology, and other scientific disciplines. In addition, such data have practical applications in\u00a0offshore wind turbine noise monitoring, as well as in\u00a0surface and underwater vehicle detection and surveillance.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tIn the early years, underwater acoustic data were mainly collected and transmitted using\u00a0hydrophones\u00a0deployed on the\u00a0seafloor\u00a0and connected via\u00a0underwater cables. In recent years, with the continuous advancement of marine technology, international research efforts have increasingly adopted\u00a0bottom-mounted systems\u00a0and\u00a0acoustic buoys\u00a0for underwater noise monitoring. Among these,\u00a0acoustic buoys\u00a0offer significant advantages due to their\u00a0operational simplicity\u00a0and ability to\u00a0transmit monitoring data in real time, making them highly promising for future applications.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tSince\u00a02015, the COMC\u00a0has been developing\u00a0indigenous underwater acoustic monitoring technology\u00a0in Taiwan. By integrating\u00a0data buoys\u00a0with\u00a0hydroacoustic instruments, COMC has developed a\u00a0long-term and real-time Underwater Sound Monitoring System (USMS).\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tThe hydroacoustic equipment developed by the\u00a0Coastal Ocean Monitoring Center (COMC)\u00a0consists of several components: a\u00a0hydrophone\u00a0(also known as an underwater microphone or underwater acoustic sensor), a\u00a0signal acquisition module, a\u00a0signal analysis module, and a\u00a0data transmission module. All functions related to\u00a0data acquisition, analysis, storage, and transmission\u00a0are\u00a0fully automated. The hydrophone is capable of recording sound frequencies ranging from\u00a0a few hertz to tens of kilohertz. After signal collection,\u00a0spectral analysis is performed directly on the buoy, and the\u00a0processed spectra\u00a0are then\u00a0transmitted via the communication module\u00a0to the\u00a0central control center\u00a0for storage and further analysis.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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