摘要
介绍了一种雷达杂波模拟系统,将接收到的雷达信号变至中频信号,利用中频采样进行数字下变频,形成基带杂波样本序列,通过软件的方式产生基带杂波调制序列,基带杂波序列对基带样本序列进行调制,获得基带杂波序列,最后对基带杂波序列进行数字上变频,经数模转换器(DAC)恢复到中频,再通过混频的方式完成雷达杂波的模拟。
This paper introduces a kind of radar clutter simulation system,which converts the received radar signal to intermediate frequency（IF） signal,uses the IF sampling theorem to perform the digital down-conversion,and forms the base-band clutter sample sequence,generates the base-band clutter modulation sequence through the software mode,uses the base-band clutter sequence to modulate the base-band sample sequence,obtains the base-band clutter sequence,finally performs the digital up-conversion for the base-band clutter sequence,recovers to the IF signal via digital to analogue converter（DAC）,then completes the simulation of radar clutter through the frequency mixing mode.
出处
《舰船电子对抗》
2012年第1期104-108,共5页
Shipboard Electronic Countermeasure
关键词
基带调制
雷达
杂波模拟
base-band modulation
radar
clutter simulation
