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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。
Due to the influence of the fluctuation of the flow rate on the tracking signal, the tracking accuracy of the traditional method is low and the false alarm rate is high. Therefore, anonymous communication tracking method for the free space laser communication network based on the spread spectrum watermarking technology is proposed. First select the appropriate watermark carrier, through the spread spectrum technology to encode the watermark signal, modulation, and then when the signal is passed to the anonymous receiver system, according to the distribution of time intervals to extract the watermark signal, and finally the watermark signal demodulation and detection, Realize the tracking of anonymous communication in free space laser communication network. The results show that this method reduces the false alarm rate of communication tracking and improves the detection rate.