摘要
本文主要介绍计算机有用信息电磁辐射机理及为接收这些信息采用的接收机应具备的条件。计算机是一个机电一体化的设备，机内除了有很多非线性元器件之外，还有很多低电压、大电流、高速度的元器件。文中分析了通过这些元器件造成各种电磁辐射的机理，同时还论述了为复现计算机泄漏的有用信息需要的接收机的特点。计算机泄漏的有用信息是宽带信号，要接收这些信号，接收机必须要有足够的灵敏度和较宽的接收带宽，并具有多种检波方式和适时分析的能力，并能进行自动化测量。
This paper introduces mechanism of electromagnetic radiation of the computer′S useful information and the conditions necessarY for the receiver to receive the information Com- puter is a mechanical and electronic equipment,With many nonlinear elements and low-voltage,heavy current,high velocity componts in it Useful information leaked from the Computer is wideband signal.To recrive it,the receiver should be possessed of high sensitivity,Wide band, varied detection mode,and capabiliY for prompt analysing and automatic measurement
出处
《系统工程与电子技术》
EI
CSCD
1995年第12期34-38,共5页
Systems Engineering and Electronics
关键词
电磁辐射
计算机
信息保密
安全保密
Electromagnetic radiation,Wideband signal,Requied information technology, In- formation leakage.
