The underwater sound transmission system(USTS) was experimentally made to monitor the cetacean s appearance by telemetry, and then its system was tested to evaluate its performance from July to October, 2007 at the Kimnyeong berth and the dolphin s breeding ground of Pacific Land in Jeju island, respectively. The results showed that the sweep sound in the trial experiment and the whistle sound of bottlenose dolphin(Tursiops truncatus) were favorably received by telemetry. Therefore, we could confirm the USTS is able to monitor the cetacean s appearance in real time without direct observation at sea within effective range of code division multiple access(CDMA) communication method.

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