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陈学煌. 噪声信号与速度测量[J]. 物理, 2002, 31(10).
引用本文: 陈学煌. 噪声信号与速度测量[J]. 物理, 2002, 31(10).
Noise signals and speedometer[J]. PHYSICS, 2002, 31(10).
Citation: Noise signals and speedometer[J]. PHYSICS, 2002, 31(10).

噪声信号与速度测量

Noise signals and speedometer

  • 摘要: 利用两个敏感元件,对周围环境中的“景物”产生两列噪声信号,这两列信号间具有时间差,该时间差惟一地由相对运动的速度决定,计算出这个时间差就知道了速度值.实验样机在50km/h速度时,分辨率为1km/h.

     

    Abstract: 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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