| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
As part of development of system for surveillance ships navigating at ocean or coastlines nearby the important power plants and facilities, I have developed methods of detecting or discrimination to approaching ships by underwater sounds. To detect approaching ships early, I introduced the spectrum analysis by First Fourier Transform (FFT) and linear prediction method. As a result, there was able to detect frequency characteristics early, more easily. And I have developed the algorithmic program using the finite-difference time-domain (FDTD) method, introduced the examination of this method. I expect that this surveillance system will be useful in predicting the presence of dangerous ships or poaching boats by sensing underwater sound.
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