旋转相控阵雷达多普勒及波束补偿技术研究  

Research on Doppler and beam compensation technology of rotating phased array radar

作　　者：李照照[1] 张磊[1] 陈国际[1] LI Zhaozhao;ZHANG Lei;CHEN Guoji(Xi’an Electronic Engineering Research Institute,Xi’an 710100,China)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《空天预警研究学报》2023年第5期364-367,383,共5页JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH

摘　　要：针对采用数字波束形成技术(DBF)的大阵面方位机械扫描雷达通道间目标回波多普勒频率差异大和方向图调制的问题,提出了旋转相控阵雷达多普勒及波束补偿的方法.首先分析多通道旋转天线的多普勒差异及机械扫描调制成因,然后给出对应的多普勒及波束两方面的补偿方法,最后通过仿真实验验证了方法的有效性.仿真结果表明,与不采用多普勒及波束补偿方法对比,采用本文所述方法后,目标所在检测单元多普勒维能量更加集中,改善效果明显;目标所在检测单元幅度也有明显提高.In order to solve the problems of target echo Doppler frequency differences between channels and pattern modulation in large array azimuth mechanically scanning radar using digital beamforming(DBF),a method of Doppler and beam compensation for rotating phased array radar is proposed.Firstly,the Doppler difference and the cause of formation of mechanically scanning modulation of multi-channel rotating antenna are analyzed,and then the corresponding Doppler and beam compensation methods are given.Finally,the effectiveness of the proposed method is verified by simulation experiments.The simulation results show that,compared with the methods without Doppler and beam compensation,after adopting the method described above,the Doppler energy of the detection unit where the target is located is more concentrated,and the improvement effect is obvious.The amplitude of the detection unit where the target is located has also been significantly improved.

关 键 词：相控阵雷达 多普勒补偿 波束补偿 数字波束形成 

分 类 号：TN957.51[电子电信—信号与信息处理]