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为了有效消除激光通信系统信道中的背景噪声,提出了激光通信系统信道噪声自动抑制方法。首先对激光通信系统的工作原理,并分析信道中背景噪声产生的原因,然后将光经偏振片变成45°线偏振光,有效过滤掉信道中的噪声,消除噪声对通信的严重干扰,输出比较干净的激光信,最后采用仿真实验对该方法的优越性进行测试,测试结果表明,该方法可以大幅度减少激光通信系统过中的误码率,能够较好的抑制噪声不利影响。
In order to effectively eliminate the background noise in the laser communication system channel, an automatic suppression method of channel noise in laser communication system is proposed. Firstly, the working principle of the laser communication system is analyzed, and the reason of the background noise in the channel is analyzed. Then the light is changed into a 45 ° linearly polarized light by the polarizer to effectively filter out the noise in the channel and eliminate the serious interference of the noise to the communication. The output The result shows that this method can greatly reduce the bit error rate of the laser communication system and can better suppress the adverse effects of noise.