基于RLS的脉压雷达数字旁瓣抑制滤波器设计方法  

Design of Digital Sidelobe Suppression Filter Based on RLS Method

作　　者：张仕元[1] 吴乐南[1] 

机构地区：[1]东南大学无线电工程系,江苏南京210096

出　　处：《测控技术》2006年第7期79-82,共4页Measurement & Control Technology

摘　　要：采用自适应滤波器设计中的递归最小二乘(RLS)方法,通过合理安排输入信号与期望信号的结构来设计脉冲压缩雷达数字旁瓣抑制滤波器,具有算法简单实用,适用广泛的特点,可用于线性调频、二相码和多相码等各种信号。在滤波器抽头有限的情况下,峰值旁瓣电平低于-40 dB;积累旁瓣电平较同类其他方法低2 dB以上;主瓣宽度仅为单位采样符号间隔。A simple, effective method using reasonably structured RLS （RS-RLS） adaptive techniques to design digital sidelobe suppression filter is presented. This method can be applied to all kinds of pulse compressed signals including linear frequency modulated（LFM） signal, biphase and multiphase signals. The simulation results show that the peak sidelobe level（PSL） of such filter＇s output, by arranging the input and its desired signals reasonably, is lower than - 40 dB, and the integrated sidelobe level（ISL） is at least 2 dB lower than that of other methods.

关 键 词：雷达 脉冲压缩 旁瓣抑制 RLS 

分 类 号：TN951[电子电信—信号与信息处理] TN713[电子电信—信息与通信工程]