太赫兹科学与电子信息学报, 2020, 18 (4): 643, 网络出版: 2020-12-25   

无人机动态数据链路电磁辐射效应试验

Electromagnetic radiation effects on dynamic datalink of UAV
作者单位
电磁环境效应重点实验室, 河北石家庄 050003
摘要
Abstract
The electromagnetic security of datalink becomes an outstanding issue for restricting the development of an Unmanned Aerial Vehicle(UAV). To improve the adaptability of the UAV’s datalink in the electromagnetic environment, a test method of electromagnetic radiation effects on the dynamic datalink is designed due to variable electromagnetic susceptibility depending on the flight state. Then the test of continuous wave radiation effects on the datalink is conducted. The results show that the electromagnetic susceptibility depends on the operation signal power. The electric field thresholds of the in-band interference is lower than 1 V/m under normal operations for UAV, but the corresponding Automatic Gain Control(AGC) voltage is the largest, reaching 190 V. Although the anti-interference capability of the datalink is weak, but its error tolerance performance is good. The increasing trend of the number of bit errors with the increase of Electromagnetic Interference(EMI) signal power is obvious. When the amount of bit errors approaches the limited maximum, the uplink can still work properly. Besides, the frequency offset EMI may suppress the BER increasing process at the critical lost-link state resulting in the disruption of the datalink. The corresponding susceptibility threshold becomes larger as the frequency offset increases, but the corresponding AGC voltage is relatively reduced.

张冬晓, 陈亚洲, 程二威, 张庆龙. 无人机动态数据链路电磁辐射效应试验[J]. 太赫兹科学与电子信息学报, 2020, 18(4): 643. 张冬晓, 陈亚洲, 程二威, 张庆龙. Electromagnetic radiation effects on dynamic datalink of UAV[J]. Journal of terahertz science and electronic information technology, 2020, 18(4): 643.

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