【摘要】 本文报道了基于空间滤波法对变加速运动物体表面运动速度进行实时测量的实验研究。采用 CCD线阵同时作为空间滤波器和光电转换器件。由 CCD线阵实现的差分栅式空间滤波器不仅消除了零频分量对低速运动测量的不利影响 ,而且导致了一种快速动态累加采样方法。实验结果表明 ,这一方法可对变加速物体运动速度进行实时测量 ,同时扩大了测量动态范围更多还原

【Abstract】 Experimental study is reported on real time measurement of velocity of solid surfaces by using spacial filtering method.In this approach,a CCD line is used as both a spacial filter and an optoelectronic transform device.A differential grating spatial filter realized by a CCD line not only eliminates the pedestal spectral component,but also enables a dynamic charge accumulation,which makes real time measurement possible.Experimental results are presented and analysed.更多还原