Moire effect as an aliasing phenomenon of periodic objects and aliasing contents as signal dependent noise of non-periodic objects are analysed.

具体分析了以矩形光栅为例的周期性目标莫尔条纹式的混淆效应，以及非周期性目标噪声形式的混淆效应。

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In this paper it is pointed out that the noise in a CCD image will be mainly the Poisson noise, which is the signal-dependent noise, with the technological background of CCD images.

本文以CCD图象为技术背景，指出CCD图象噪声主要将以与信号有关的泊松噪声形式存在。

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As the charge exerted from input voltage source is dependent on quantization error and input noise voltage to a large extent, the circuit has high signal input impedance.

由于提取自输入电压源的电荷很大程度上仅取决于量化误差与输入噪声电压，所以电路具有高信号输入阻抗。

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