Since the downward conversion photon pairs have strong correlation in time, they can be used for noise - free optical communication.

由于下转换光子对具有很强的时间相关性，可用来进行无噪声的光通讯。

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Optical joint transform correlation can recognize automatically, overcome the drawback of filter-based correlator, and it is suitable for real-time processing, can achieve better recognition result.

克服了经典的匹配滤波相关存在大的相关旁瓣、很大的相关带宽和低的光效率等缺点。

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Using the technology of optical correlation can real-time track and recognize moving targets, but the reliability is not very good because of noise while dealing with the images.

利用光学相关的目标识别技术可以实时处理和检测目标，但检测效果容易受噪声影响，检测的可靠性不高。

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