GNSS接收机窄带干扰陷波抑制研究  

Study on Narrowband Interference Suppression with Botch Filter in GNSS Receiver

作　　者：于雪岗 邓志鑫 范广伟 

机构地区：[1]河北省卫星导航技术与装备工程技术研究中心,河北石家庄050081

出　　处：《无线电工程》2013年第9期33-37,共5页Radio Engineering

基　　金：国家高技术研究发展计划("863"计划)资助项目(2012AA121801)

摘　　要：在GNSS服务过程中,由于卫星与用户之间的距离非常远,地面接收到的卫星导航信号的功率非常小,而用户接收机所处环境是复杂的电磁干扰环境,所以导航信号会受到各种各样的干扰的影响。因此如何减小这些干扰对接收机的影响成为当前卫星导航领域的一个重要发展方向。现代应用中的直接型IIR陷波器、格型IIR陷波器以及改进形式对信号进行时域窄带干扰陷波抑制,可以从理论上分析并实现仿真得出这种方法的可行性。The power of GNSS signal is very weak because of the large distance between the satellite and user. And the receiver is located in complex electromagnetic circumstance. GNSS signal is affected by sorts of interference. It＇ s important to reduce the effect of the interference on GNSS receiver. Recent application shows that direct IIR botch filter,grid IIR botch filter and its amelioration could suppress the narrowband interference. This paper presents analysis on the feasibility in theory and simulation.

关 键 词：时域 电磁干扰 窄带干扰 陷波器 卫星导航 

分 类 号：TN820.1[电子电信—信息与通信工程]