摘要
为了提升自由空间卫星量子激光通信地面终端的跟踪精度并实现轻量化设计,设计了一种基于双探测器复合轴跟踪技术的轻量化量子激光通信跟踪系统。该系统采用T型铝合金跟踪架和碳化硅主镜结构,结合粗-精跟踪分级控制策略,通过压电陶瓷快反镜补偿残余误差,并引入智能调参比例积分微分(PID)控制算法优化参数。实验结果表明:系统在星地外场测试中,粗跟踪精度标准差为4 arcsec(方位轴)和6.3 arcsec(俯仰轴),精跟踪闭环后综合误差标准差降至1.4 arcsec(方位轴)和1.2 arcsec(俯仰轴),同时系统重量较传统设计减轻50%。
To improve the tracking accuracy of free-space satellite quantum laser communication ground terminals and achieve a lightweight design,a lightweight quantum laser communication tracking system based on dual-detector compound-axis tracking technology is designed.The system adopts a T-shaped aluminum alloy tracking frame and a silicon carbide primary mirror structure,combined with a coarse-fine tracking hierarchical control strategy.Residual errors are compensated by a piezoelectric fast steering mirror,and an intelligent parameter-tuning proportional-integral-derivative(PID)control algorithm is introduced to optimize parameters.Experimental results show that during the satellite-to-ground field test,the standard deviation of coarse tracking accuracy is 4 arcsec(azimuth axis)and 6.3 arcsec(elevation axis).After fine tracking closed-loop correction,the composite error standard deviation is reduced to 1.4 arcsec(azimuth axis)and 1.2 arcsec(elevation axis).Meanwhile,the system weight is reduced by 50%compared with traditional designs.
作者
于帅北
曹艳波
徐彩前
王芳
孙景旭
YU Shuaibei;CAO Yanbo;XU Caiqian;WANG Fang;SUN Jingxu(Ji Hua Laboratory,Foshan Guangdong 528200,China)
出处
《光通信技术》
北大核心
2025年第4期72-76,共5页
Optical Communication Technology
基金
广东省重点领域研发计划项目(2018B030328001)资助。
关键词
量子激光通信
复合轴控制
自动调参
比例积分微分控制
主元分析神经网络
quantum laser communication
compound-axis control
automatic parameter tuning
proportional-integral-derivative control
principal component analysis neural network
