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为解决卫星振动时时间延时积分电荷耦合器件(TDICCD)级数的选择问题.采用调制传递函数(MTF)作为评价成像质量的方法,推导了卫星振动时MTF与TDICCD级数之间的公式,重点研究了在发生线性振动和低频正弦振动时,为使图像质量不产生明显下降的情况下TDICCD级数的选择方法.研究结果表明:在不使图像产生明显的质量下降的情况下,TDICCD最大允许级数随着振动速率的减小而增大;在同一振动周期下,最大允许振幅随着TDICCD级数的增大而减小;在相同TDICCD级数的情况下,最大允许振幅随着振动周期的增大而增大.
In order to solve the problem of TDICCD series selection when the satellite vibrates, the modulation transfer function (MTF) is used to evaluate the imaging quality, and the formula between MTF and TDICCD series is deduced. This paper focuses on the selection of TDICCD series in the case of linear vibration and low-frequency sinusoidal vibration when the image quality is not significantly reduced.The results show that TDICCD is the largest without significant image quality degradation The allowable series increases with the decrease of the vibration velocity. Under the same vibration cycle, the maximum allowable amplitude decreases with the increase of TDICCD series. In the case of the same TDICCD series, the maximum allowable amplitude increases with the vibration Increase the cycle and increase.