主动雷达导引头虚假截获问题分析与研究

由于主动雷达导引头空间狭窄、电路组成复杂、包含了丰富的频谱分量,在工作中各种频谱分量极易被导引头截获,从而造成虚假截获。主动雷达导引头产生虚假截获的原因很多,而且不容易抑制。主要从主动雷达导引头内部着手,对导引头工作期间因空间耦合、通道耦合产生虚假截获的机理进行了分析,并推导出了可能引起虚假截获的泄漏功率表达式,同时针对性的从收/发时序、收/发隔离、自检信号关断、脉间功率抑制等方面提出了克服虚假截获的相应措施。这些措施经在批生产产品上实施,取得了良好的效果,有效克服了主动雷达导引头虚假截获问题。

Research on the False Capture of Active Radar Seeker

Because the active radar seeker of narrow space,complex circuit,abundant spectral components,the seeker is extremely easy to capture the various spectral components at work,thus causing false capture.Generate false capture for many reasons,but not easy to restrain.From the active radar seeker within,the cause of producing the false capture due to spatial coupling,channel coupling in the active radar seeker working is analysed.And the expression of leakage power which may induce a false capture is deduced.At the same time,the corresponding measures are put forward to overcome the false capture from the receive / send timing,receive / send signal isolation,self turn-off,veins power suppression etc.These measures have achieved good results in the products;the false capture problems for active radar seeker are effectively overcome.