重频超宽带电磁脉冲对GPS导航接收机的效应研究  

Influence of repeated frequency UWB electromagnetic pulseon GPS navigation receiver

作　　者：胡明 陈圣贤 李永龙 袁雪林 Hu Ming;Chen Shengxian;Li Yonglong;Yuan Xuelin(School of Electronics and Communication Engineering,Sun Yat-sen University,Shenzhen 518107,China)

机构地区：[1]中山大学电子与通信工程学院,广东深圳518107

出　　处：《强激光与粒子束》2024年第3期65-71,共7页High Power Laser and Particle Beams

基　　金：中国电波传播研究所稳定支持项目(A132301215)。

摘　　要：全球定位系统(GPS)在被广泛应用的同时,也容易受到外界的干扰,因此研究GPS导航接收机的可靠性具有重要意义。超宽带(UWB)电磁脉冲具有陡峭的上升沿和宽频谱,能够对GPS进行干扰,是一种新型导航干扰手段。通过分析重频超宽带电磁脉冲的能量谱线分布情况探究了其对GPS导航接收机的干扰机理,对重频UWB电磁脉冲对GPS接收机干扰效果与脉冲参数之间的关系进行了研究。结果表明:重频UWB电磁脉冲可以对导航接收机射频前端电路造成非线性干扰,降低接收机的捕获性能,提高脉冲场强或者重频可以增强干扰效果,甚至导致接收机失去捕获能力。While the global positioning system(GPS)is widely used,it is also susceptible to external interference.Therefore,it is of great significance to study the reliability of GPS navigation receivers.Ultra-wideband(UWB)electromagnetic pulse has a steep rising edge and a wide spectrum,it can interfere with GPS and has become a new navigation interference method.This paper explores the interference mechanism of repeated frequency UWB electromagnetic pulses to GPS navigation receivers by analyzing their energy spectrum line distribution and studies the relationship between their interference effect on GPS receivers and the pulse parameters.The results show that repeated frequency UWB electromagnetic pulses can cause nonlinear interference to the radio frequency front-end circuit of the navigation receiver,reducing the receiver's acquisition performance.Increasing the pulse field strength or repetition frequency can enhance the interference effect and even cause the receiver to lose its acquisition ability.

关 键 词：电磁脉冲 超宽带 导航接收机 捕获性能 压制干扰 

分 类 号：TN972[电子电信—信号与信息处理]