双码元X射线通信信号调制与误码率分析  

Dual-Symbol X-Ray Communication Signal Modulation and Symbol Error Rate Analysis

作　　者：董国仓 高有涛 董航硕 伍翼翔 李诗嘉 金利民 Dong Guocang;Gao Youtao;Dong Hangshuo;Wu Yixiang;Li Shijia;Jin Limin(College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,Jiangsu,China;College of Economics and Management,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,Jiangsu,China;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,Jiangsu,China)

机构地区：[1]南京航空航天大学航天学院,江苏南京211106 [2]南京航空航天大学经济与管理学院,江苏南京211106 [3]南京航空航天大学材料科学与技术学院,江苏南京211106

出　　处：《激光与光电子学进展》2024年第9期523-528,共6页Laser & Optoelectronics Progress

基　　金：中央高校基本科研业务费专项(NT2022024)。

摘　　要：为提高X射线通信效率,提出一种利用双靶材X射线源实现双码元通信的方案。通过调节磁场强弱和方向变化,控制电子不打靶、均匀打靶、轰击铬靶或铜靶,完成了基于磁场调制的双靶材X射线源的双码元通信信号调制实验,取得了间隔为10 s、距离为40 cm条件下的200组实验数据。基于实验数据,利用遗传优化二元泊松分布模型对通信误码率进行了分析,分析结果表明:当信号衰减值低于400时,可以实现误码率低于10^(-4),在此条件下,探测端每时隙内留存大约500个光子;遗传优化算法提高了识别精度,在衰减值超过1000的环境中误码率优化幅度为10^(-1)左右,误码率在10^(-4)范围内,优化幅度约为10^(-5),本研究为基于多靶材X射线源的X射线通信技术的发展提供了方向。This study proposes a system for achieving dualsymbol communication using a dualtarget Xray source to improve Xray communication efficiency.By adjusting the strength and direction of the magnetic field,the electrons can be controlled not to bombard,uniformly bombard,bombard the chromium target,or bombard the copper target and complete the experiment on dualsymbol communication signal modulation based on the magneticfield modulation dualtarget Xray source.In the experiment,200 datasets are obtained at a time interval of 10 s and a distance of 40 cm.Based on the experimental data,the symbol error rate is analyzed using a genetically optimized binary Poisson distribution model.The results show that when the signal attenuation value is lower than 400,the symbol error rate is lower than 10^(-4).Under this condition,approximately 500 photons remain in each time slot of the detection end.The genetic optimization algorithm improves recognition accuracy.When the attenuation value exceeds 1000,the symbol error rate optimization amplitude is approximately 10^(-1).Within the 10^(-4) symbol error rate range,the optimization amplitude is approximately 10^(-5).This study provides a direction for developing Xray communication technology based on multitarget Xray sources.

关 键 词：X射线通信 二元泊松分布 遗传优化 误码率 

分 类 号：TN927[电子电信—通信与信息系统]