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无人机数据链电磁干扰机理和防护研究

赵敏 许彤 程二威 周星 孙亮 陈亚洲

赵敏, 许彤, 程二威, 等. 无人机数据链电磁干扰机理和防护研究[J]. 强激光与粒子束, 2021, 33: 033005. doi: 10.11884/HPLPB202133.200263
引用本文: 赵敏, 许彤, 程二威, 等. 无人机数据链电磁干扰机理和防护研究[J]. 强激光与粒子束, 2021, 33: 033005. doi: 10.11884/HPLPB202133.200263
Zhao Min, Xu Tong, Cheng Erwei, et al. Mechanism and protection on the data link of UAV exposed to electromagnetic interference[J]. High Power Laser and Particle Beams, 2021, 33: 033005. doi: 10.11884/HPLPB202133.200263
Citation: Zhao Min, Xu Tong, Cheng Erwei, et al. Mechanism and protection on the data link of UAV exposed to electromagnetic interference[J]. High Power Laser and Particle Beams, 2021, 33: 033005. doi: 10.11884/HPLPB202133.200263

无人机数据链电磁干扰机理和防护研究

doi: 10.11884/HPLPB202133.200263
基金项目: 装备预先研究项目(41409010501)
详细信息
    作者简介:

    赵敏:赵 敏(1985—),女,博士研究生,从事电磁环境效应与评估技术研究;zhao_min_2012@126.com

    通讯作者:

    陈亚洲(1975—),男,博士,教授,从事装备电磁环境效应与防护研究;chen_yazhou@sina.com

  • 中图分类号: TN97

Mechanism and protection on the data link of UAV exposed to electromagnetic interference

  • 摘要: 针对无人机在飞行过程中其数据链系统容易受到外界电磁干扰而导致链路中断的问题,以某型无人机数据链系统为研究对象,提出了一种基于前门耦合的电磁敏感度注入效应试验方法。基于该方法开展了某型无人机数据链系统电磁敏感度效应试验,得到了该数据链系统的敏感度阈值曲线,确定了其电磁敏感度阈值,分析了机载数据链接收机射频前端的工作原理和电磁干扰作用下接收机的信号传输过程,揭示了组合频率干扰和带外饱和干扰对无人机机载数据链的作用机理,最后进行了试验验证。在实验研究的基础上,从电磁兼容设计层面和自适应控制策略方面分别有针对性地提出了相应的防护方法。
  • 图  1  机载数据链设备的工作原理框图

    Figure  1.  Working principle block diagram of a UAV’s datalink device

    图  2  接收机电路原理图

    Figure  2.  The circuit schematic of the receiver

    图  3  不同飞行距离下的无人机数据链上行工作信号强度曲线

    Figure  3.  The curve of operation signal strength of UAV’s data link under different flight distance

    图  4  注入信号功率与场强对照试验配置图

    Figure  4.  The comparison test configuration between injection signal power and field strength

    图  5  不同极化方式下最大注入信号功率与频率的变化关系曲线

    Figure  5.  The relationship between the maximum injection signal power and frequency in the vertical and horizontal polarization mode

    图  6  无人机数据链的电磁敏感度注入效应试验配置图

    Figure  6.  The test configuration of electromagnetic sensitivity injection method for the data link of UAV

    图  7  200 V/m辐照场强对应的功率值和数据链敏感度阈值的对比曲线

    Figure  7.  The contrast curve of signal power corresponding to 200 V/m radiation field and sensitivity threshold of the data link

    图  8  不同工作信号强度下的敏感度阈值曲线

    Figure  8.  Sensitivity threshold curves under different operation signal strength

    图  9  干扰信号作用于接收机的信号传输和处理过程示意图

    Figure  9.  Schematic diagram of signal transmission and processing of interfering signal on the receiver

    图  10  中频输出波形

    Figure  10.  Output waveform of intermediate frequency

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出版历程
  • 收稿日期:  2020-09-14
  • 修回日期:  2021-01-18
  • 网络出版日期:  2021-03-30
  • 刊出日期:  2021-03-05

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