| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2010: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2009: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Research Abstract |
An early warning system for sensing suspicious ships approaching the important power plants and facilities located on coastlines has become necessary. Thus, we developed a buoy equipped with the maritime surveillance system.
In this report, the results of sensing underwater sound from ships on the actual sea are presented. The underwater sound was recorded with hydrophones mounted on an observation ship and was analyzed by the linear prediction method. The method used to detect underwater sound of ships approaching the observation ship was evaluated. Results show that this technique can be a useful method for real-time underwater sound monitoring. We expect that this surveillance buoy system will be useful in predicting the presence of dangerous ships or poaching boats by sensing underwater sound.
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