基于物联网技术的光通信信号自动捕捉和跟踪的研究

Based on Internet of things technology of optical communication signal automatic capturing and tracking study

光通信信号在进行点对点对接时,受大气湍流干扰较大,光信号扫描轨迹存在断裂,导致建立的光通信信道容量小、误码率高。为此设计基于物联网技术的光通信信号自动捕捉和跟踪方法。运用多设备物联网络定位通信双方位置坐标,转换三维坐标至站心坐标系,根据站心坐标计算方位角和俯仰角,调整通信视轴至捕捉不确定区域,物联网中采用接收机接收光信号,设置接收机门限值和信道增益值,消除大气湍流、吸收散射干扰,通过光栅扫描,完整扫描不确定区域内全部光信号,实现光信号捕捉和跟踪。选取一个激光束发射端和三个接收端,选择红光信标光,设置光通信对比实验,结果表明,所提方法增加了光通信信道容量,减小了信道误码率,建立信道充分满足了光通信需求。

When the optical communication signal is in point-to-point docking, it is greatly disturbed by atmospheric turbulence, and the scanning track of the optical signal is broken, which leads to the small capacity and high bit error rate of the optical communication channel. An automatic capture and tracking method of optical communication signal based on Internet of things technology is designed. In the Internet of things, the receiver is used to receive the optical signal, and the threshold value and channel gain value are set to eliminate atmospheric turbulence and absorb scattering interference, All optical signals in the uncertain area are scanned completely to realize optical signal capture and tracking. Select a laser beam transmitter and three receivers, select the red beacon light, set up the optical communication contrast experiment. The results show that the proposed method increases the optical communication channel capacity, reduces the channel bit error rate, and establishes the channel to fully meet the requirements of optical communication.