【摘要】 根据长波红外相机积分时间短的特点,阐述了多次采样叠加技术的原理和应用.并在此基础上分析了采用多次采样叠加技术对系统MTF产生的影响.给出了不同采样系数和叠加次数对应的系统MTF变化.当采样系数固定时,探测器MTF随叠加次数的增加而减小,系统推扫方向MTF随叠加次数的增加而减小.更多还原

【Abstract】 According to the short integration time characteristics of long wave infra-red focal plane array,the principle and application of oversample-superpositon technique were discussed.The effect of oversample-superpositon on the MTF of system was analyzed on the basis of the chareacteristics of LWIR FPA.The corresponding oversample-superpositon MTFs at different sampling and superpositon time were given.As the superposion time decreases,the detector MTF is reducing while system scanning MTF is rising when the sampling time is fixed.更多还原