基于基带调制的雷达杂波模拟设计

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。

Design of Radar Clutter Simulation Based on Base-band Modulation

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.