卫星导航接收机带外电磁干扰效应研究  

Study on the effect of satellite navigation receiver under out-of-band electromagnetic interference

作　　者：张庆龙 陈亚洲 于凤全 张毅 韩芳林 周玲宇 ZHANG Qinglong;CHEN Yazhou;YU Fengquan;ZHANG Yi;HAN Fanglin;ZHOU Lingyu(Naval Aviation University,Yantai 264000,China;Shijiazhuang Campus,Army Engineering University of PLA,Shijiazhuang 050003,China)

机构地区：[1]海军航空大学,山东烟台264000 [2]陆军工程大学石家庄校区,河北石家庄050003

出　　处：《系统工程与电子技术》2024年第8期2563-2571,共9页Systems Engineering and Electronics

摘　　要：针对导航接收机在带外电磁干扰下出现卫星跟踪丢失的现象,以导航接收机为研究对象,开展连续波电磁干扰注入效应试验,得到导航接收机在电磁干扰下的敏感阈值曲线。通过利用先进设计系统(advanced design system,ADS)电路仿真软件构建导航接收机射频前端电路,仿真分析结果表明带外电磁干扰下产生的副通道干扰是导致卫星跟踪丢失的主要原因。同时,通过数学模型分析和试验验证的方法,得知低次谐波敏感频段的效应机理与射频前端低噪声放大器有关,这对于提升导航接收机抗带外电磁干扰的能力具有一定指导意义。Aiming at the phenomenon of satellite tracking loss of the navigation receiver out-of electromagnetic interference,a certain type of navigation receiver is taken as the research object,and the continuous wave electromagnetic interference injection effect experiment is carried out,and the sensitivity threshold curve of the navigation receiver in the presence of electromagnetic interference is obtained.By using advanced design system(ADS)circuit simulation software to build the radio frequency(RF)front-end circuit of the navigation receiver,the simulation analysis results show that the secondary channel interference generated by out-of-band electromagnetic interference is the main reason for the loss of satellite tracking.At the same time,through mathematical model analysis and experiment verification method,it is known that the effect mechanism of low harmonic sensitive frequency band is related to the low noise amplifier of RF front-end,which has certain guiding significance for improving the ability of the navigation receiver to resist out-of-band electromagnetic interference.

关 键 词：导航接收机 电磁干扰 跟踪丢失 先进设计系统 

分 类 号：TN972[电子电信—信号与信息处理]