To estimate the parameter of velocity and acceleration with high accuracy and in real time for the measurement radar, an improved method based on spectrum zooming is proposed.

针对测量雷达要实时准确获得目标速度、加速度测量值的问题，提出了一种基于频谱细化的参数估计方法。

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Based on the experiment, the relation between ring parameter and vibration velocity of 30204 tapered rolling bearing is studied.

以试验为基础，研究30204圆锥滚子轴承套圈参数与振动速度的关系。

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We use grey system theory to analyze the experimental findings and found out the parameter which mostly affects the vibration velocity of tapered roller bearing.

利用灰色系统理论对试验数据进行分析，找出了对轴承振动速度值影响比较大的参数。

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