一种提高GNSS接收机干扰抑制能力的方法  

An Method for Improving Anti-Jamming Ability of GNSS Receiver

作　　者：李传军[1] 王新龙[1] 

机构地区：[1]北京理工大学宇航学院,北京100081

出　　处：《兵工自动化》2013年第4期47-50,共4页Ordnance Industry Automation

摘　　要：针对GNSS接收机依靠外部卫星射频信号进行导航,易受到有意或无意的射频干扰影响的问题,对卫星接收机特别是弹载卫星接收机的抗干扰性能及其抗干扰技术进行研究。分别从信噪比和跟踪门限2个方面对卫星接收机的抗干扰性能进行详尽分析,通过对有无干扰信号时对接收机接收信号的信噪比的对比,以及对不同跟踪门限下接收机抗干扰能力的分析,提出了采用INS辅助跟踪环路技术来提高接收机抗干扰能力的方法。结果表明:该方法在不改变接收机硬件结构、不增加成本的条件下,可有效提高弹载接收机的抗干扰能力。GNSS receivers rely on outer satellite radio-frequency signals, so they are vulnerable to intentional or unintentional signal interference. Research anti-jamming ability and technology of satellite receiver, among others the ammunition-loading satellite receiver. Analyze anti-jamming ability of satellite receiver from signal to noise ratio and tracking threshold. Through comparing analysis of receiver signal to noise ratio when there is anti-jamming signal or there is no anti-jamming signal, and receiver anti-jamming ability analysis under different tracking threshold. The results show that the method can effectively improve receiver anti-jamming ability without changing receiver hardware structure and increasing cost.

关 键 词：GNSS接收机 抗干扰性 信噪比 跟踪门限 

分 类 号：TJ861[兵器科学与技术—武器系统与运用工程]