宽带信号的失真分析与改善  

Analysis and Improvement on Distortion of Wide-band Signal

作　　者：徐玮[1] 李涛[1] 张涛[1] 董锦[1] 

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2014年第2期48-52,共5页Fire Control Radar Technology

基　　金：装备预先研究项目(40405020101)

摘　　要：高分辨雷达需要高质量的宽带信号,工程中的发射激励信号由于存在宽带失真,大大限制了信号处理的脉冲压缩性能。本文从一种宽带波形产生器的研制入手,分析了信号产生中出现宽带失真的原因及表现形式,并通过预失真等数字校正的方法,改善了宽带发射激励信号的质量,获得了满意的脉压效果。Wide-band signals with high-quality are required by high resolution radars. Due to wide-band distortion existed in transmission exciting signal in engineering, the performance of pulse compression in signal processing has been limited greatly. Starting from development of a wide-band waveform generator, the cause and manifestation of wide -band distortion occured in generating signal is analyzed, and the quality of wide -band transmission exciting signal is improved by using digital correction methods like pre-distortion to obtain satisfying pulse compression effectiveness.

关 键 词：宽带信号 信号失真 脉冲压缩 预失真 

分 类 号：TN911.7[电子电信—通信与信息系统]