为了克服不带电子快门的CCD成像探测器曝光时间无法控制的问题,提出了改变驱动时序的设计方法.在帧频确定的情况下,通过在水平读出之后增加电荷释放状态,将一帧之内多余时间段的电荷迅速排放掉,可以有效地控制CCD曝光时间,并克服CCD最小曝光时间为水平读出时间的问题.实验结果表明,大孔径静态成像光谱仪系统的抗饱和性能得到了很好的改善且此方法的非线性度为4.61%.

The method of CCD exposure time control based on driver timing was proposed for the situation of the high performance CCD imaging detector without electronic shutter. The charge will be drained quickly in the excess period by increasing the charge excretion state after the horizental readout under the certain frame frequency. It can control the CCD exposure time effectively,and overcome the problem the CCD minimum exposure time is equal to the readout time. Results show that the booming resistance of the large aperture static imaging spectrometer is well improved and the non-linearity of the method is 4.61%.