基于IIR开环滤波的导航接收窄带滤波器设计  

A Method of Narrow Band Interference Suppression Based on IIR Open Loop Filter in RNSS

作　　者：王振华 范广伟 邓江娜[2] 

机构地区：[1]卫星导航系统与装备技术国家重点实验室,河北石家庄050081 [2]河北省科技情报研究院,河北石家庄050000

出　　处：《无线电工程》2017年第7期78-81,共4页Radio Engineering

基　　金：十三五国家重点研究发展计划基金资助项目(2016YFB0502402)

摘　　要：针对快变场景中的卫星导航接收窄带干扰抑制问题,结合自适应滤波原理,提出了一种基于开环滤波的自适应陷波器设计方法,实现了导航接收系统中的窄带干扰自适应抑制,解决传统时域滤波器计算量大或收敛速度慢的问题。仿真结果表明,该算法比最优维纳滤波器的运算量低,相比LMS算法收敛速度快、性能好、窄带强干扰抑制能力优于30 d B。A new design of open loop filter was proposed based on self-adaption notch filter, in order to solve the narrow band interference suppression of RNSS receiver in fast changing scene. Furthermore, the problem of large quantity calculation and slow convergence rate in traditional time domain filter could be solved.At last the results of IIR simulation represented better performance in convergence rate than LMS filtering, less calculation than Wiener filtering. A narrow band interference suppression of no less than 30 dB was proved.

关 键 词：干扰抑制 自适应滤波 开环时域陷波 卫星导航 

分 类 号：TN967.1[电子电信—信号与信息处理]