搜索空情雷达加装旁瓣匿影系统的设计

Design of Sidelobe Blanking System for Search Airborne Radar

为了提高现役雷达的抗干扰能力,对其加装旁瓣匿影系统。即在雷达搜索天线上加装参考天线及辅助接收机并且对搜索雷达信号处理机软件进行适应性改进,而且辅助通道中设置可调节的检测门限,与搜索雷达自身的检测门限和恒虚警门限配合,可最大程度降低因旁瓣匿影处理所带来的检测损失。试验结果表明该方法能够实现旁瓣匿影,达到设计要求,可以为同类产品的加改装提供借鉴。

In order to improve the anti-jamming ability of radar in service,sidelobe blanking system is added to it.The reference antenna and auxiliary receiver are installed on the radar search antenna,and besides,the software of search radar signal processor is improved adaptively.An adjustable detection threshold is set in the auxiliary channel,matching with the detection threshold of the search radar itself and the CFAR threshold,which can minimize the detection loss caused by the sidelobe blanking processing.The experimental results show that this method can realize sidelobe blanking and meet the design requirements,which can also provide a reference for the modification of similar products.