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Noise signals and speedometer[J]. PHYSICS, 2002, 31(10).
Citation: Noise signals and speedometer[J]. PHYSICS, 2002, 31(10).
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Noise signals and speedometer

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  • The use of two sensors can produce two frains of noise signals of the surrounding objects with a time-interval between the two signals. This time-interval is only determined by the speed of relative motion, so the speed can be found by calculating the time-interval. The resolution of our experimental pilont instrument is 1km/h when the speed is 50km/h.
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