https://scholars.lib.ntu.edu.tw/handle/123456789/598305
標題: | A case study of whistle detection and localization for humpback dolphins in Taiwan | 作者: | Hung C.-T Chu W.-Y Li W.-L Huang Y.-H Hu W.-C CHI-FANG CHEN |
關鍵字: | Marine mammal;Ocean sound measurement;Time difference of arrival;Underwater acoustic;Underwater sound sensing;Whistle detection | 公開日期: | 2021 | 卷: | 9 | 期: | 7 | 來源出版物: | Journal of Marine Science and Engineering | 摘要: | In recent years, Taiwan’s government has focused on policies regarding offshore wind farming near the Indo-Pacific humpback dolphin habitat, where marine mammal observation is a critical consideration. The present research developed an algorithm called National Taiwan University Passive Acoustic Monitoring (NTU_PAM) to assist marine mammal observers (MMOs). The algorithm performs whistle detection processing and whistle localization. Whistle detection processing is based on image processing and whistle feature extraction; whistle localization is based on the time difference of arrival (TDOA) method. To test the whistle detection performance, we used the same data to compare NTU_PAM and the widely used software PAMGuard. To test whistle localization, we designed a real field experiment where a sound source projected simulated whis-tles, which were then recorded by several hydrophone stations. The data were analyzed to locate the moving path of the source. The results show that localization accuracy was higher when the sound source position was in the detection region composed of hydrophone stations. This paper provides a method for MMOs to conveniently observe the migration path and population dynamics of cetaceans without ecological disturbance. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109896198&doi=10.3390%2fjmse9070725&partnerID=40&md5=8c51e26d002a0c4e3a7c0ae35a4f22e6 https://scholars.lib.ntu.edu.tw/handle/123456789/598305 |
ISSN: | 20771312 | DOI: | 10.3390/jmse9070725 |
顯示於: | 工程科學及海洋工程學系 |
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