简单地截掉脉冲信 号的尾端来获得滤波器系数的做法会产生孔径效应（Aperture effect）和吉布森现象（Gibson phenomenon）：滤波器频率曲线在截至频率前提升，同时产生通带和阻带纹波。
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... 五、取样产生的孔径效应(Aperture Effect) 二、眼图(Eye Pattern) 三、帧同步(Frame Synchronization) ...
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Aperture Effect AE 孔径效应
Soft gain aperture effect 软孔增益光阑效应
Real-time Large Aperture DOF Effect 大光圈实时景深摄录
The air gap capacitance sensors with distinct composition have been developed for reducing aperture effect.
为了削弱孔径效应，空气间隙的电容传感器采用了不同的结构。
However, the instantaneous bandwidth of signals is restricted for general phased array because of its transition time and aperture effect.
但是，基于移相器的普通相控阵天线在进行宽带宽角扫描时，由于渡越时间和孔径效应的影响，使信号的瞬时带宽受限。
Due to the restriction of aperture effect and the aperture traverse delay, it is difficult for a conventional phased array radar to get wide instantaneous bandwidth under wide scan scope.
由于孔径效应和孔径渡越时间的限制，传统的相控阵雷达难以在大扫描角下实现大瞬时带宽。
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