双天线对消弹射式干扰中的相位估计  

Phase Estimation in Rebound Jamming Suppression by Two-Channel SAR

作　　者：甘荣兵[1] 王建国[1] 何川[2] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054 [2]电子对抗国防科技重点实验室,四川成都610036

出　　处：《电子学报》2005年第9期1691-1693,共3页Acta Electronica Sinica

摘　　要：在对抗对合成孔径雷达的弹射式干扰中,双路对消技术取得了较好的结果,但是对消的前提是知道两路中的干扰信号相位差.本文提供了一种有效的估计干扰信号相位差的方法.以两路对消后的能量最小为准则,采用以黄金分割法为基础的自动搜索算法,得到相位差.同时通过仿真实验验证了方法的正确性.As studied earlier, Two-Channel Cancellation method provides a good way to remove rebound jamming to SAR. But the estimation of the phase difference of the jamming signal is difficult,because the parameters needed to estimate the phase difference is usually unknowable. An automatic way to estimate the phase difference is provided in this paper. First a minimal power criterion is designed and adopted to estimate the phase.After that,an optimization algorithm was used for its estimation.Finally the perfomance of the method is verified by simulation result. It proves that our algorithm has good performance.

关 键 词：合成孔径雷达 电子对抗 黄金分割法 

分 类 号：TN974[电子电信—信号与信息处理]