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分析了实际电磁环境对无人机的影响,综合实际飞行环境中各种地面发射机的辐射以及场地电磁环境的测试数据,得到在0.1~8000 MHz频段中,对无人机造成伤害的电磁环境场强极限值为60~200 V/m.根据无人机存在辐射干扰和传导干扰的共性特征,将不同频段下传导干扰与辐射干扰进行结合分析,得到无人机系统级电磁辐射极限场强在0.1~2000 MHz频段中为60~100 dB.μV/m.由此提出可实际操作的无人机电磁兼容测试法,详细描述了各项目的测试手段、所用仪器和极限值.依照军用飞机雷电防护鉴定试验法GJB 3567—99,在实际飞行场地中采用410 A敏感度测试系统进行测试,结果显示该无人机各机载设备工作正常,未出现设备失灵或降级情况.
The influence of the actual electromagnetic environment on the UAV is analyzed. Based on the radiation of various ground transmitters in the actual flight environment and the test data of the electromagnetic environment of the site, the electromagnetic environment that harms the UAV in the frequency band of 0.1-8000 MHz is obtained The field strength limit value is 60 ~ 200 V / m.According to the common characteristics of radiated interference and conducted interference of UAV, the combination of conducted interference and radiated interference in different frequency bands is analyzed to obtain the ultimate field strength of UAV system-level electromagnetic radiation 60-100 dB.μV / m in the frequency band of 0.1-2000 MHz, thus a practicable unmanned aerial vehicle electromagnetic compatibility test method is put forward, and the test means, instruments used and limit values of each item are described in detail. In accordance with the military aircraft Thunder and lightning protection identification test method GJB 3567-99, 410 A sensitivity test system in the actual flight field test, the results show that the UAV all airborne equipment is working properly, there is no equipment failure or downgrade situation.