计算机电磁信息泄漏阈值效应研究

Study of threshold effects of information leakage arising from computer

基于进场实测数据,建立了计算机视频信号的电磁辐射模型,利用计算电磁学的方法定量地研究了计算机视频信号的电磁辐射强度;提出了信息泄漏阈值和信息识别度的概念,进一步研究了信息泄漏阈值与信息识别度的关系以及信息识别度与接收距离的关系;定量地研究了电磁泄漏信息截获与再现的关键因素和条件。

The video signal electromagnetic radiation model was set up based on near-field testing data of computer radiation, and the strength of video electromagnetic radiation was investigated in quantification by using computational electromagnetics method. Further more, the concepts of threshold of information leakage and information identification resolution were proposed. At last, the relation of threshold of information leakage and information identification resolution, and the relation of information identification degree and interception distance were studied. The key factors and conditions of the electromagnetic information leakage were studied in quantification.