| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Research Abstract |
The purpose of this study is to realize a rear-sonar of automobile for detecting obstacles(or targets) behind the automobile, using the exhaust sound of the automobile emitted from the automobile muffler. (1) We considered the fundamental properties and potentials of the distance estimation method based on the phase interference of audible sound. (2) We developed several methods, so as to reduce the error due to geometrical positions of the loudspeaker, target and microphone and the error due to the effect of the observation noise and measurement system. Furthermore, (3) we proposed a distance measurement method to measure the distance shorter than the minimum measurable distance.
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