基于信号时变性的空间光通信网络优化研究  

Research on optimization of spatial optical communication network based on signal time-varying

作　　者：佘静[1] 胡睿 SHE Jing;HU Rui(Zhixing College of Hubei University,Wuhan 430011,China;Yangtze Optical Fibre and Cable Joint Stock Limited Company,Wuhan 430073,China)

机构地区：[1]湖北大学知行学院,武汉430011 [2]长飞光纤光缆股份有限公司,武汉430073

出　　处：《激光杂志》2022年第9期129-133,共5页Laser Journal

基　　金：湖北省教育厅科学技术研究项目(No.B20181211)。

摘　　要：为抑制空间光通信网络信号功率波动情况,研究基于信号时变性的空间光通信网络优化方法。通过推导空间光通信网络的单向时延波动模型,计算双波长时延差波动与单波长时延波动间的比例系数;使用定时器单脉冲模式,校正光信号抵达接收端的时延波动,以接收到的光信号功率波动幅度最小为目标函数,经遗传算法求解后优化空间光通信网络。实验结果表明,该方法在测量信号时延时具有较高准确性,最多相差0.002 s,经校正后时延波动得到降低,减少了0.21 s,且该方法优化后空间光通信网络信号功率波动程度小,信号传输效果得到提升。In order to suppress the signal power fluctuation of space optical communication network,the optimization method of space optical communication network based on signal time variablity is studied.By deducing the oneway delay fluctuation model of space optical communication network,the proportional coefficient between dual-wavelength delay difference fluctuation and single-wavelength delay fluctuation is calculated.Using the timer single-pulse mode,the delay fluctuation of the optical signal reaching the receiving end is corrected,and the spatial optical communication network is optimized after the genetic algorithm is solved.The experimental results show that this method has high accuracy in measuring signal time delay,with the maximum difference of 0.002 s.After correction,the time delay fluctuation is reduced by 0.21 s,and the signal power fluctuation degree of the space optical communication network is small after optimization by this method,and the signal transmission effect is improved.

关 键 词：信号时变性 空间光 通信网络 遗传算法 时延波动 传输效果 

分 类 号：TN911[电子电信—通信与信息系统]