摘要
针对传统转发干扰对ISAR只能形成点斑干扰的不足,提出了ISAR散射波干扰方法,该方法将截获的ISAR发射信号直接转发至目标,经目标散射后形成散射波干扰信号,获得了更为丰富的干扰信息。文中根据双基地ISAR的成像理论,将干扰机与ISAR接收机分别等效为双基地ISAR的发射站和接收站,建立了ISAR散射波干扰模型,分析了散射波干扰的功率以及对ISAR的干扰效果。研究结果表明通过控制干扰机的转发时延和等效双基地角,散射波干扰可以对ISAR形成单个或多个不同位置的假目标欺骗干扰,而且实现简便,是一种对ISAR形成假目标数量欺骗干扰的有效手段。
According to the deficiency of the conventional repeater jamming which only produces the spot jamming to ISAR,the ISAR scatter-wave jamming technique is presented in this paper.The intercepted radar signal is transmitted to target in this method,and the scatter-wave jamming signal is obtained by scattering of the target.The much more jamming information is included in the scatter-wave jamming signal than the conventional repeater jamming signal.Based on the imaging theory of the bistatic ISAR,the jammer and ISAR are regarded as the transmitter and the receiver of the equivalent bistatic ISAR respectively.On the basis,the model of the ISAR scatter-wave jamming is discussed,and the jamming power and the jamming effects are analyzed in detail.A false target or multi-false target deceptive jamming to ISAR can be produced by the scatter-wave jamming method via controlling the repeater delay and the equivalent bistatic angle,and can be easily realized.So it is an effective means for jamming the ISAR imaging.
出处
《现代雷达》
CSCD
北大核心
2011年第7期49-52,67,共5页
Modern Radar
基金
"十一五"国防预研基金资助项目
