Abstract
为了减小外辐射源雷达系统中常规杂波相消算法的运算量，该文利用数字电视地面广播(DTTB)照射源中的PN序列，提出了一种快速杂波相消算法。该算法基于PN序列良好的自相关特性，并考虑到DTTB信号对载频频偏(CFO)很敏感，提出2-D信道和CFO估计来提高估计精度；然后，利用估计的信道和CFO进行直达波重构和杂波相消，剩余目标回波和噪声。相比于传统的杂波相消算法，该方法运算量比较小，并且所有处理都基于预警天线，不需要参考天线，简化了系统模型。最后仿真实验验证了算法的有效性。
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