摘要
提出了运用"猫眼"效应原理对激光窃听技术进行改进的方案,分析了功率对比度与离焦量的关系。窃听过程中,音频振动信号对功率对比度进行调制,探测功率对比度并进行解调可实现激光窃听。经验证型实验分析,该方法具有可行性。
Using ＂cat＇s eye＂ effect theory to improve the laser eavesdropping device was proposed and the relationship between power contrast degree and defocus distance were analyzed. During tapping, sound frequency vibration signal would regulate power contrast degree, detect and regulate the degree to realize laser tapping, though the kind of demonstrate experiment proved its practicability.
出处
《激光与红外》
CAS
CSCD
北大核心
2008年第2期145-148,共4页
Laser & Infrared
关键词
“猫眼”效应
激光窃听
功率对比度
声波振动
离焦量
＂cat＇s eye effect＂
laser eavesdropping
power contrast degree
sound frequency vibration
defocus distance
