激光窃听技术的改进与实现

The Improvement and Realization of Laser Eavesdropping

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.