基于射频信号的转发式干扰系统仿真模型
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摘要
针对无人机数据链干扰现阶段传统的压制性干扰效果差,完整形式的欺骗性干扰技术实现难度大的问题,提出了对无人机数据链的转发式干扰基本构想,建立了转发式干扰系统仿真模型。该模型利用平方倍频法和延时相关法分别对射频信号的载频、码速率等参数进行了盲估计。通过引入转发干扰成功率作为转发式干扰稳定与否的判断标准,探究了射频存储长度、转发周期和信噪比等转发干扰参数对系统的影响情况。仿真实验结果验证了转发式干扰系统的可行性,且在转发干扰参数满足一定边界条件时,可以实现对无人机稳定干扰,实验结果可为工程应用提供一定参考。
In view of the traditional method of data link jamming against UAV(Unmanned Aerial Vehicle) system has the problem of poor property and hard to realize, a simulation model of forward jamming system was established for the radio frequency signal of UAV uplink data link according to the basic concept of forward jamming. The model estimated the carrier frequency and code rate of radio frequency signal blindly by using square frequency doubling method and delay correlation method, and then introduced the success rate of repeater jamming as the criterion to judge the stability of repeater jamming. The simulation results showed that the stable jamming of UAV could be achieved when the parameters met certain boundary conditions, and provided a certain reference for engineering applications.
In view of the traditional method of data link jamming against UAV(Unmanned Aerial Vehicle) system has the problem of poor property and hard to realize, a simulation model of forward jamming system was established for the radio frequency signal of UAV uplink data link according to the basic concept of forward jamming. The model estimated the carrier frequency and code rate of radio frequency signal blindly by using square frequency doubling method and delay correlation method, and then introduced the success rate of repeater jamming as the criterion to judge the stability of repeater jamming. The simulation results showed that the stable jamming of UAV could be achieved when the parameters met certain boundary conditions, and provided a certain reference for engineering applications.
引文
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[2]祁圣君, 井立, 王亚龙.无人机系统及发展趋势综述[J].飞航导弹, 2018(04):17-21.
[3]杨红生, 黄华园.通用无人机测控系统与关键技术[J].电讯技术, 2018(04):391-396.
[4]曹厚平, 马晓雷, 丁振.无人机数据链技术应用研究[J].中国新通信, 2017(17):88-89.
[5]Xia W, Zhou Y, Guo Q, et al.Blind estimation of long-code DSSS signals based on information symbol transition pattern[C]//IEEE International Conference on Signal Processing. US: IEEE, 2017
[6]单凉, 张剑云, 周青松, 等.基于拟合优度的欺骗干扰识别方法[J].探测与控制学报, 2016(02):98-102.
[7]朱林, 方胜良, 孙晓军, 等.转发式干扰下卫星数据链效能分析与仿真[J].电子信息对抗技术, 2014(03):29-32.
[8]张耀中, 张建东, 史国庆.无人机警戒雷达仿真系统的建模与仿真[J].火力与指挥控制, 2016(02):93-96.
[9]张兴凯, 王喜发, 戴紫彬.无人机遥控指令加密方式的研究[J].电子技术应用, 2008,34(5):141-144.
[10]张冬晓, 陈亚洲, 肖雪荣, 等.无人机主遥控数据链电磁干扰机理研究[J].微波学报, 2016(02):90-96.
[11]李敏乐, 毕大平, 陈璐.基于频率恒定变换的宽带信号分离算法[J].探测与控制学报, 2017,39(3):75-80.
[12]罗名君, 史英春, 张旻.基于分层处理的短码直扩信号盲解扩算法[J].探测与控制学报, 2017,39(1):26-30.
[13]谭舒, 吕明, 成昊, 等.DS/BPSK信号载频估计方法的研究[J].信息技术, 2006(7):117-119, 129.
[14]宋成瑞, 叶伟, 盛世强.DS-SS通信扩频码特性分析[J].科技视界, 2018(7): 1-5.
[15]张仔兵, 李立萍, 肖先赐.MPSK信号的循环谱检测及码元速率估计[J].系统工程与电子技术, 2005(05):803-806.
[16]周钱, 臧国珍, 宋慧颖.基于循环谱的DSSS信号检测方法研究[J].通信技术, 2017,50(11):2419-2425.