A detection method for weak signal with coherence average is presented, and the principle of cross-correlation detection is introduced.

提出了采用相干平均法提高信号的信噪比并检测微弱信号的方法，介绍了相关检测的原理。

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The principle of the Cross-correlation-coefficient algorithm and the absolute difference algorithm are introduced, all kinds of different noise type of CCD apparatus are analyzed.

简要阐述了互相关因子算法和绝对差分算法的基本原理； 分析了CCD器件各种不同的噪声类型；

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First, the principle of the correlation tracking algorithm was analyzed, and the normalized cross-correlation algorithm was taken as the research object.

首先，对相关算法进行了分析，选取归一化互相关积算法作为研究对象。

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First, the principle of the correlation tracking algorithm was analyzed, and the normalized cross-correlation algorithm was taken as the research object.

首先，对相关算法进行了分析，选取归一化互相关积算法作为研究对象。

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