CAJ | 학술논문

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。
개소료일충뢰체잡파모의계통,장접수도적뢰체신호변지중빈신호,이용중빈채양진행수자하변빈,형성기대잡파양본서렬,통과연건적방식산생기대잡파조제서렬,기대잡파서렬대기대양본서렬진행조제,획득기대잡파서렬,최후대기대잡파서렬진행수자상변빈,경수모전환기（DAC）회복도중빈,재통과혼빈적방식완성뢰체잡파적모의。
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.