摘要
多任务系统带来的射频兼容问题对无人机系统的功能实现是一种挑战。针对超短波语音电台、船舶自动识别系统(AIS)等多频通信下无人机系统GPS搜星受扰问题,首先通过故障树分析开展故障定位研究;其次,利用平面铝板模拟装机平台开展现场试验验证,复现故障现象;最后,通过干扰路径带通滤波措施有效抑制超短波语音电台发射时产生的有意发射信号,避免该信号经AIS设备非线性作用产生GPS接收机带内干扰信号,从而有效地解决无人机GPS接收机受扰的问题。
The RF compatibility problem caused by multi-mission system poses challenges for the function realization of unmanned aerial vehicle(UAV)system.In allusion to the problem that GPS star search of UAV system is disturbed under multi-frequency communication such as VHF voice radio station and ship automatic identification system(AIS),fault location is studied by means of the fault tree analysis.The plane aluminum plate simulation platform is used to conduct the field test verification to repeat the fault phenomenon.The interference path band-pass filtering measures are used to effectively suppress the intentional transmitted signals generated during the transmission of VHF voice radio station,so as to avoid the in-band interference signals of GPS receiver caused by the nonlinear effect of the AIS equipment,and effectively improve the disturbance of UAV GPS receiver.
作者
唐宇
TANG Yu(Chengdu Space-on Technology Development Co.,Ltd.,Chengdu 610036,China;University of Electronic Science and Technology of China,Chengdu 610054,China)
出处
《现代电子技术》
2023年第16期111-115,共5页
Modern Electronics Technique
关键词
多频通信
无人机系统
GPS接收机
自动识别系统
电磁干扰
干扰源定位
故障分析
multi-frequency communication
UAV system
GPS receiver
AIS
electromagnetic interference
interference source localization
fault analysis
