摘要
对视频脉冲信号经由多导体连接器孔隙电磁辐射引起的信息泄漏效应进行研究.基于诺顿定理、传输线理论和孔隙激励原理建立了多导体连接器的等效电路模型,提出了连接器电缆"外导体-大地"回路的有限差分模型,在时域计算了连接器电缆外导体上的分布电流,分析了多导体连接器的孔隙辐射系数和电磁泄漏波的特征.研究表明多导体连接器孔隙电磁辐射具有高通特性.电磁泄漏波携带着原始信号的敏感信息.多导体连接器孔隙电磁辐射是导致信息泄漏的重要途径之一.
A study was conducted to investigate information leakage caused by the aperture video electromagnetic radiation from a multi-conductor connector. The equivalent circuit of a multi-conductor was set up based on Norton's theorem, transmission line theory and aperture excitation theory. The finite difference model of outer conductor ground circuit was proposed and the current on outer cable conductor calculated. The aperture EM radiation coefficient and the characteristics of electromagnetic leakage were studied. The study shows that the aperture EM radiation from a multi-conductor connector has a high pass characteristic and the EM leakage contains sensitive information. The aperture EM radiation from multi-conductor connector is a key factor in information leakage.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2004年第4期517-520,共4页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(60271018
60331010).
