一种超宽带信号多通道采集与恢复方法  

A Way of Multi-channel A/D for UWB Signal and Its Reconstruction

作　　者：彭长青[1] 粟毅[1] 匡纲要[1] 陆仲良[1] 

机构地区：[1]国防科技大学电子技术系

出　　处：《现代雷达》1996年第1期39-48,共10页Modern Radar

摘　　要：提出了一种超宽带（ＵＷＢ）信号多通道采集及信号波形恢复方法。其基本思想是把ＵＷＢ信号分成若干频带，对每个频带用低速Ａ／Ｄ进行采集，然后用镜像滤波器恢复信号波形。仿真结果表明：这一方法可消除多通道采集系统中通道间耦合产生的失真，能很好地恢复信号波形。In this paper,a new way for ultra wide band (UWB) signal A/D conversion and signal reconstruction using an array of lower speed A /D converters is introduced. Its basic idea is to decompose a signal into several continuous frequency bands ,so that a specific,subconverter can be assigned to each band signal,then make use of the theory of quadrature mirror filter to recon-struct the digital sequence corresponding to the input analog signal.Simulation results verifies the good performance of the way.

关 键 词：多通道A/D 信号恢复 超宽带 冲激雷达 接收机 

分 类 号：TN957.5[电子电信—信号与信息处理]