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中文摘要：
视频显示器直接实现人机对话，其视频信息的辐射包含有直接的显示信息，是导致计算机信息泄漏的重要部件之一．研究并设计了针对计算机电磁信息泄漏的接收和再现系统，在对电磁泄漏波进行截获的基础上，提出利用锁相、同步、匹配滤波、相关滤波等信息重构技术获得再现的文字图像的方法．结果表明在一定的条件下利用计算机信息泄漏可以重构原始有用信息，有可能危及信息安全，是信息安全和电子对抗中所必须考虑的重要因素之一．
英文摘要：
Video Displayer Unit, which is one of the most important parts that may result in computer information leakage, offers the interface for man-machine conversation directly and its video electromagnetic radiation contains the displaying information. The interception and recovery system of video electromagnetic information leakage of the computer was designed. After the electromagnetic leakage is intercepted,the method to recover the word image is presented by using the reconstruction techniques such as phase lock on, synchronization,matched filtering and related filtering etc. This means that the original useful information can be reconstructed by the electromagnetic leakage under certain conditions, and this will menace information security. It is one of the most important factors that should be concerned in information security and electronic antagonism fields.
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