Research on In-Band Continuous Wave Electromagnetic Interference Effect of Unmanned Aerial Vehicle Data Link

被引：0
作者：
Xu T. [1 ]
Chen Y. [1 ]
Wang Y. [1 ]
Zhao M. [1 ]
机构：
[1] National Key Laboratory on Electromagnetic Environment Effects, Shijiazhuang Campus of Army Engineering University, Shijiazhuang
来源：
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2021年 / 41卷 / 10期
关键词：
Automatic gain control (AGC); Continuous wave jamming; Data-link; Electromagnetic interference (EMI); Gain compression; Unmanned aerial vehicle (UAV);
D O I：
10.15918/j.tbit1001-0645.2021.031
中图分类号：
学科分类号：
摘要：
Data-link is an important sub-system of unmanned aerial vehicle (UAV) and a key link to ensure the UAV air-ground communication. However, it is easy to be affected by external electromagnetic interference, leading to communication interruption and even hardware damage. Based on the front-end coupling electromagnetic sensitivity of a certain UAV data link, an equivalent injection test was carried out. The effect law of single frequency and dual frequency electromagnetic interference on data link were studied, and the loss-of-lock threshold of the sensitive frequency points of the data link and the changing trend of the bit error rate and the signal noise ratio were obtained. The results show that: due to the high-power interference signal passing through the automatic gain control (AGC) circuit, the output power of the intermediate frequency (IF) useful signal is reduced in the radio frequency (RF) front end, resulting in a reduction of signal noise ratio (SNR) and an increase in the bit error rate (BER) in data terminal. When the dual-frequency interference is both in-band, the compression effect on the gain of useful signal at the front end is stronger than that of the single-frequency interference. Therefore, when the data-link is out of lock, the threshold of any one of the dual-frequency interference is lower than that of the single-frequency interference, which indicates that a multi-source nonlinear enhancement effect exists in the in-band jamming. © 2021, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.
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页码：1084 / 1094
页数：10
相关论文
共 15 条
  • [1] LIU Shanghe, WU Zhancheng, ZHANG Xijun, Electromagnetic environment effect and its development trends, National Defense Science & Technology, 29, 1, pp. 1-6, (2008)
  • [2] WANG Liandong, SHEN Xujian, ZHOU Bo, Review on cognition of complex electromagnetic environment, Aerospace Electronic Warfare, 36, 2, pp. 1-6, (2020)
  • [3] CHEN Chilian, TANG Zheng, HU Junfeng, Et al., Datalink 2.0:the victory maker of intelligent war, Journal of Command and Control, 6, 1, pp. 5-12, (2020)
  • [4] ZHANG Zilong, LU Cunpu, CHEN Juan, Et al., Research on tactical data link system of U. S.army and its enlightenment, Command Information System and Technology, 11, 4, pp. 28-33, (2020)
  • [5] WEI Guanghui, ZHAO Kai, REN Shizhao, Second-order intermodulation low frequency blocking effect and mechanism for communication radio under electromagnetic radiation, Journal of Electronics & Information Technology, 42, 8, pp. 2059-2064, (2020)
  • [6] ZHANG Dongxiao, CHEN Yazhou, CHENG Erwei, Et al., Effects of electromagnetic interference (EMI) on information link of UAV, Transactions of Beijing Institute of Technology, 39, 7, pp. 756-762, (2019)
  • [7] CHEN Yazhou, ZHANG Dongxiao, CHENG Erwei, Investigation on susceptibility of UAV to radiated IEMI[C], Proceedings of 2018 IEEE International Symposium on Electromagnetic Compatibility and 2018 IEEE Asia-Pacific Symposium on Electromagnetic Compatibility (EMC/APEMC), pp. 718-722, (2018)
  • [8] ZHANG Dongxiao, CHEN Yazhou, ZHOU Xing, Investigation on effects of HPM pulse on UAV's datalink, IEEE Transactions on Electromagnetic Compatibility, 62, 3, pp. 829-839, (2020)
  • [9] LI Chunrong, YUAN Qilun, FENG Yanbin, Effect mechanism of high power microwave interaction with data link, Modern Defence Technology, 41, 5, pp. 148-153, (2013)
  • [10] ZHANG Dongxiao, CHEN Yazhou, TIAN Qingmin, Et al., Mechanism of continuous wave electromagnetic radiation on UAV's vice telecontrol system, High Power Laser and Particle Beams, 27, 10, pp. 189-195, (2015)
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