The sampling theorem shows that aliasing can be avoided if the Nyquistfrequency is greater than the bandwidth, or maximum component frequency, of the signal being sampled.
采样定理表明，如果奈奎斯特频率大于样本的带宽或样本成分的最高频率，系统的采样失真可以避免。
2
So that ensure the camera on fly with satellite to obtain the demand ground pixel resolution over the Nyquistfrequency. The paper also introduces the main parameters of foreign TDICCD camera.
To adequately preserve the shape of your signal, you should sample at a much higher rate than the Nyquistfrequency, generally at least 5 or 10 times the maximum frequency component of your signal.