设计了一套简便易行的星地光通信中精跟踪演示系统方案,并详细介绍了精跟踪演示系统的组成。跟踪算法采用改进神经网络的PID算法,在线调整网络加权值。最后,针对不同频率的信标抖动进行了跟踪补偿模拟实验,实验结果表明,该精跟踪系统实现了高频信标光抖动跟踪补偿,具有很好的实用性。
A simple demonstration system for fine tracking in satellite-to-ground optical communication is put forward, with the components presented in detail. With the PID-like neural network algorithm, the weights of neural networik could be adjusted by the function of selflearning in real time. Experiment results indicate the fine tracking system can track highfrequency beacon vibrations, which is beneficial for practical applications.