一种改进的FDA–MIMO雷达波束形成算法  

An improved FDA–MIMO radar beamforming algorithm

作　　者：李星星 熊智敏[2] 王党卫[2] 马晓岩[2] LI Xingxing;XIONG Zhimin;WANG Dangwei;MA Xiaoyan(Unit 78102,Chengdu Sichuan 610014,China;Department of Early Warning Technology,Air Force Early Warning Academy,Wuhan Hubei 430000,China)

机构地区：[1]78102部队,四川成都610014 [2]空军预警学院预警技术系,湖北武汉430000

出　　处：《太赫兹科学与电子信息学报》2020年第4期606-609,共4页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(61179015,61401503)。

摘　　要：频率分集阵列多输入多输出(FDA-MIMO)雷达由于其波束具有距离依赖特性而受到广泛关注。建立了FDA-MIMO雷达的回波模型,将传统的特征空间(ESB)波束形成算法扩展到该体制雷达。针对该算法在低信噪比(SNR)性能较差的问题,提出了一种改进的ESB波束形成算法。仿真结果表明该体制雷达能够抑制来自角度主瓣的距离依赖干扰,并证明了新算法的有效性。Frequency Diverse Array Multiple-Input and Multiple-Output(FDA-MIMO) has drawn a remarkable amount of attention due to its particular range-dependent beampattern. Firstly, the echo model of the FDA-MIMO radar is established;then the conventional Eigensapce-Based(ESB) beamformer is extended to this model. Finally, an improved ESB beamforming algorithm is proposed to enhance the performance in low Signal Noise Ratio(SNR). Simulation results show that the range-dependent interference from main lobe can be suppressed and the effectiveness of the proposed algorithm is verified.

关 键 词：频率分集阵列多输入多输出雷达 距离依赖波束 特征空间算法 干扰抑制 

分 类 号：TN911[电子电信—通信与信息系统]