线性调频脉冲压缩雷达的匹配干扰研究  

Study on Matched Jamming Against Linear FM Pulse Compression Radar

作　　者：李仙茂[1] 罗景青[2] 卞小林[1] 

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033 [2]解放军电子工程学院,安徽合肥230037

出　　处：《现代防御技术》2007年第4期104-107,131,共5页Modern Defence Technology

摘　　要：由于脉冲压缩雷达对目标回波具有很高的压缩比(增益),而对不匹配的干扰信号则压缩比很小。为了提高干扰的有效功率,提出一种与脉压雷达目标信号相仿的线性调频信号作为干扰信号(即匹配干扰),经过理论分析得到了匹配干扰信号在不同的对准频偏情况下,进入雷达的有效干扰功率。通过仿真,结果证实这种匹配干扰可很大程度地提高进入雷达的有效干扰功率,但有效干扰功率会随对准频偏的加大而减小。Pulse compression radar has a high pulse compression ratio （gain） for target signals, but its compression ratio is low for not matched jamming signals. For the sake of increasing the input power of jamming signal, a linear FM signal is proposed as jamming signal, which simulates the target signals of compression radar （namely matched jamming）. The results from theoretically analyzing and computer simulation are presented that the matched jamming can highly increase the compression ratio of it after passing the filter. But the input power can decrease when the aimming frequency deviation is increase

关 键 词：匹配干扰 线性调频 脉冲压缩 

分 类 号：TN958.3[电子电信—信号与信息处理]