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电荷耦合器件(CCD)图像传感应用中,通过非实测手段获取器件的干扰效应阈值非常重要,有时甚至是唯一手段。分析了行间转移型CCD单像素饱和与串扰等典型激光干扰效应的影响因素,研究了垂直拖尾、光晕和串扰3种效应的物理本质间的内在联系与区别,初步证实垂直拖尾系数对串扰效应而言为非敏感参数。提出了基于饱和信号电荷量、像元尺寸、量子效率以及光晕抑制率等器件参数,从现有的效应数据预估相似器件单像素饱和阈值、串扰线饱和阈值的外推方法。对柯达面阵CCD器件的饱和阈值测量与干扰效应实验显示,预估结果与实验值之间的偏差量分别为3%和20%,属于可以接受的范围,表明预估方法切实可行。
In CCD (Charge Coupled Device) image sensing applications, it is important and sometimes the only way to obtain the interference effect threshold of the device through non-measured means. The influencing factors of typical laser interference effects such as saturation and crosstalk of single-pixel transfer between CCDs are analyzed. The intrinsic relationships and differences between the physical properties of the three effects of vertical tailing, halo and crosstalk are studied. The vertical tailing coefficients Non-sensitive parameters for crosstalk effects. Based on the parameters of saturation signal charge, cell size, quantum efficiency and the suppression ratio of the halo, the extrapolation method of single-pixel saturation threshold and crosstalk saturation threshold of similar devices is proposed based on the existing effect data. The Kodak area array CCD device saturation threshold measurement and interference effects experiments show that the deviation between the estimated results and the experimental values were 3% and 20%, respectively, which belongs to the acceptable range, indicating that the estimation method is feasible.