某型无人机连续波电磁辐照效应研究

为了研究无人机在战场电磁环境下的安全性及可靠性,对无人机壳体的屏蔽效能进行了仿真计算,并在开阔场环境下建立连续波电磁辐照系统,利用连续波电磁辐照系统对无人机整机和通信链路核心部件收发组合进行辐照效应实验。仿真结果表明,在10MHz ~1GHz 连续波作用下,无人机壳体的屏蔽效能较低,为10dB 左右;实验结果表明,在某些频点或频段,无人机会出现通信链路中断的现象,表现为失锁状态,即无人机不能与地面控制站进行有效的数据传输,且不同的辐射场极化方向导致出现失锁现象的电场阈值不同。分析表明,电磁能量进入无人机机体内部产生干扰的主要耦合途径为无人机天线和无人机壳体的透射。

Continuous-Wave Electromagnetic Radiation Effects of UAV

In order to study the safety and reliability of UAVs in the battlefield electromagnetic environment, the shielding effectiveness of the UAV housing was simulated, and continuous-wave electromagnetic radiation system was established in the open field environment, radiation effects experiments were carried out for the UAV machine and the core components transceiver portfolio of communication link system. Simulation results show that, under 10MHz-1GHz continuous wave irradiation, the shielding effectiveness of UAV housing is low, about 10dB; The experimental results show that, in some frequencies or frequency band, UAV data link system will appear the phenomenon of unlocked, UAV cannot carry out efficient data transmission with ground control station, and different polarization direction of radiated electromagnetic field leads to different values of the electric field threshold for the communication link system unlocked. The analysis show that the main electromagnetic energy coupled channel are UAV antenna and transmission through UAV housing.