宽频带相控阵雷达子阵数字调制新技术  

Subarray Digital Modulation Technique of Wideband Phased Array Radar

作　　者：龙腾[1] 毛二可[1] 张洪纲[1] 曾涛[1] 刘海波[1] 刘泉华[1] 

机构地区：[1]北京理工大学雷达技术研究所,北京100081

出　　处：《现代雷达》2014年第11期1-7,共7页Modern Radar

摘　　要：针对探测远距离空间目标群的大口径宽频带相控阵雷达系统设计,提出了宽频带相控阵雷达子阵数字调制新技术,采用子阵频率调制和数字去斜,替代模拟延迟线,以解决宽频带相控阵雷达宽角扫描波束发散难题,实现宽频带相控阵雷达大成像窗口、脉间相参;并可支持宽带数字多波束、零点形成以及检测前聚焦处理,提高复杂电磁环境下的抗干扰能力。通过宽频带雷达和差三通道精确校正技术,可以采用宽频带进行检测、跟踪,提高雷达时间资源利用率。A novel subarray digital modulation technique is proposed for the large aperture wideband phased array radar,which is designed for detecting long-range space group targets.Instead of using analog true time delay unit,subarray frequency modulation and digital stretch are adopted to solve the beam dispersion problem caused by wide scan angle of wideband phased array radar.This technique can also support large imaging window and interpulse coherent integration.Besides,wideband digital multi-beam forming,wideband zero forming and focus before detection （FBD） process can also be performed.It can improve the ability of suppressing the interference in complex electromagnetic environment.By accurately correcting amplitude and phase errors of monopulse channels,the radar can fulfill the mission using wideband detection and tracking,which improves radar time utilization.

关 键 词：宽频带相控阵雷达 子阵频率调制 数字去斜 幅相补偿 宽频带检测跟踪 

分 类 号：TN958.92[电子电信—信号与信息处理]