宽带相控阵雷达的延时实现方法  

Time Delay Method in Wideband Phased Array Radar

作　　者：陈泳[1] 张玉华 肖达 邵凡麒[1] 管玲妹 谭建华 CHEN Yong;ZHANG Yuhua;XIAO Da;SHAO Fanqi;GUAN Lingmei;TAN Jianhua(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2020年第5期70-75,共6页Modern Radar

摘　　要：为了克服大口径平面相控阵天线扫描角增大时对信号瞬时带宽的限制,可在发射与接收通道配置实时延迟线。首先,介绍了大口径宽带相控阵雷达波束扫描对雷达瞬时带宽实现的影响;然后,说明了延迟线解决方案的原理,综述了各种类型延迟线的解决方案和优缺点,并在线性调频体制下基于移频移相的宽带收发系统原理给出了上下行链路的系统实现框图;最后,给出实验与仿真结果,验证了文中方法的有效性。When the scanning angle augments in huge-size planar phased array antenna, the instantaneous bandwidth of the signals will be restricted. In order to conquer this restriction, real time delay in T/R channel is collocated. The influence of beam scanning to the realization of radar′s instantaneous bandwidth under such a circumstance is firstly introduced, and the principle of the real time delay solution is afterward illustrated. Meanwhile all sorts of real time delay solution methods and their strong or weak points are summarized. The wideband T/R system principle is then presented based on frequency-shifting and phase-shifting in linear frequency modulation system, and the diagrams of upconvertion and downconvertion chains are unfolded, consequently the experiment and simulation results are disclosed, proving the validity of the method.

关 键 词：宽带相控阵雷达 孔径效应 实时延迟线 微波光子学 移频移相 

分 类 号：TN958.92[电子电信—信号与信息处理]