某型无人机数据链连续波电磁辐照效应试验分析

Experiment Analysis of Continuous Wave Electromagnetic Irradiation Effect for a Certain Type of UAV Data Link

为客观评价无人机数据链的抗电磁干扰能力,以某型无人机数据链系统为研究对象,搭建了无人机连续波辐射电磁效应平台。以＂失锁＂效应作为数据链受到干扰的判别依据,对数据链系统开展单频点连续波辐照电磁环境效应试验。通过试验得到了敏感频带以及导致数据链失锁所需干扰信号功率值和在无人机机载天线周围产生的干扰信号辐射场强值,验证了阻塞干扰对无人机数据链通信的影响。同时发现,相比于遥控链路工作频带,干扰信号频率在遥测链路工作频带内更容易引起数据链失锁。通过试验研究,为下一步无人机数据链抗电磁干扰性能的提升打下基础。

For the objective evaluation for anti-electromagnetic interference capability of the UAV data link,the data link system of a certain type of unmanned aerial vehicle is taken as the research object,a UAV continuous wave radiation electromagnetic effect platform is built. The＂unlocked＂effect is used as the basis for judging the interference of the data link,Electromagnetic Environment Effect of single-frequency continuous wave irradiation on data link system is studied. Through the experiment,the mechanism of jamming interruption of data link communication is verified,and the sensitive frequency band and the electric field threshold of the radiation field are obtained. The experiment results show that,the interference signals are more likely to cause data link unlocked in remote measurement link operating frequency bands; For the same frequency interference,when the interference signal which transmits to front end of the receiver is greater 32.5 d B than the operating signal,it can cause data link unlocked.