自由空间保密光通信的研究及其实现  

The research of security aspects of free-space optical communication

作　　者：王佳[1] 俞信[1] 赵磊[1] 

机构地区：[1]北京理工大学信息科学技术学院光电工程系,北京100081

出　　处：《光学技术》2005年第6期935-938,共4页Optical Technique

摘　　要：利用Mie散射理论分析论证了自由空间光通信传输的光信号在信道外被截获的可能性。提出了两种适于自由空间光通信图像保密通信的方法,并对这两种方法的性能进行了比较。设计并研制了实验系统。利用所提出的方法实现了自由空间光通信的图像保密传输。The security of free-space laser communication system was proved not as good as thought. The probability of be wiretapped was proved. Two image encryption methods were presented and compared, A experiment system of free-space optical communication was designed. The image secure communication is realized by the mentioned encryption methods with this system.

关 键 词：自由空间光通信 保密通信 图像加密 图像置乱 

分 类 号：TN919.8[电子电信—通信与信息系统] TN918[电子电信—信息与通信工程]