一种采用较低采样率分析超宽带雷达信号的方法  

Analysis of UWB Radar Signal with Low Sampling Rate

作　　者：王武恒[1] 张炜[1] 靖锏[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《现代电子技术》2010年第15期52-54,共3页Modern Electronics Technique

摘　　要：基于凯塞窗和滤波器组理论,结合超宽带雷达信号的幅频特性,设计原型低通FIR数字滤波器,并对原型低通滤波器进行余弦调制,构建分析和综合滤波器组,对给定信号进行分析和综合。利用Matlab软件进行仿真试验,证明这种方法降低了信号采样率和数字化处理难度,提高了信号处理的效率,并实现了信号的近似完全重建。A prototype low-pass FIR digital filter was designed based on the theory of Kaiser-window and filters group in combination with the altitude and frequency characteristics of UWB radar.Its cosine modulation was performed,the filters group were constructed and synthesized to analyze the given signals.The simulation by Matlab proves that the method reduced the sample rate of signal and the difficulty of digital process,improved efficiency of signal process,and realized PR of signal approximately.

关 键 词：超宽带雷达 凯塞窗 FIR数字滤波器 余弦调制 完全重建 

分 类 号：TN95[电子电信—信号与信息处理]