自由空间激光通信网络匿名通信追踪方法  

Noise reduction method of laser particle image in mixed noise environment

作　　者：冯学晓 刘翠芳 张亮 

机构地区：[1]郑州工业应用技术学院现代教育技术中心,郑州451100 [2]郑州工业应用技术学院党政办,郑州451100

出　　处：《激光杂志》2016年第11期119-121,共3页Laser Journal

基　　金：河南省高等学校重点科研项目(15B520015)

摘　　要：由于流速率波动会对追踪信号的影响,导致传统方法的追踪精度低、误报率高,为此提出基于扩频流水印技术的自由空间激光通信网络匿名通信追踪方法。首先选定适当的水印载体,通过扩频技术对水印信号进行编码、调制,然后当信号传递到匿名接收系统时,根据时间间隔的分配情况提取水印信号,最后对水印信号进行解调和检测,实现对自由空间激光通信网络匿名通信的追踪。结果表明,该方法降低了通信追踪的误报率,提高了检测率。In the process of anonymous communication in the free space laser communication network, the fluctuation of the flow rate will have a great impact on the tracking signal, resulting in low tracking, high false alarm rate and poor applicability. Put forward a based on spread spectrum watermarking technology in free space laser communication network anonymous communication tracking method, selected appropriate watermarking vector, by using spread spectrum technology of watermark signal of modulation and coding, ; when the signal is transmitted to the anonymous access system, according to the distribution of time intervals extracted watermark signal, and network filters the noise interference, using PN code demodulation and detection of the watermark signal, tracking of free space laser communication network anonymous communication. Experiments show that the proposed method can effectively reduce the false alarm rate and improve the detection rate and applicability.

关 键 词：通信网络 匿名通信追踪 水印信号 检测率 

分 类 号：TN29[电子电信—物理电子学]