Interception of EM Leakage Arising from the CRT of Computer

摘要：

This research investigates the Experiment to intercept and retrieve the electromagnetic (EM) leakage of video information arising from the cathode ray tube (CRT) of a computer. After the EM leakage signal is intercepted by an antenna, it is filtered, amplified and phase locked in the receiver. Then, the EM leakage signal is sampled via an A/D card and the digital data are sent to a software program. Further, the method to retrieve the available information from EM leakage is presented using techniques such as synchronization method, average filter, matched filter and wavelet transform etc. At last, the recovered Chinese characters from EM leakage are given as an image format.

关键词： electromagneti cradiation CRT EM leakage

作者: Hongxin Zhang Yinghua Lu Hongxin Zhang

作者单位: School of Electronic Engineering Beijing University of Posts and Telecommunications,BUPT Beijing, Ch State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing,

会议类型: 国际会议

会议名称: Second International Symposium on Electronic Commerce and Security(第二届电子商务与安全国际研究大会)(ISECS 2009)

会议地点: 南昌

会议语种:英文

页码: 1025-1028

在线出版日期: 2009-05-22（万方平台首次上网日期，不代表论文的发表时间）