Multiple interferences suppression with space-polarization null-decoupling for polarimetric array  

作　　者：LU Yawei MA Jiazhi SHI Longfei QUAN Yuan 

机构地区：[1]State Key Laboratory of Complex Electromagnetic Environmental Effects on Electronics and Information System,College of Electronic Science,National University of Defense Technology,Changsha 410073,China

出　　处：《Journal of Systems Engineering and Electronics》2021年第1期44-52,共9页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61901496;61871385)。

摘　　要：The adaptive digital beamforming technique in the space-polarization domain suppresses the interference with forming the coupling nulls of space and polarization domain.When there is the interference in mainlobe,it will cause serious mainlobe distortion,that the target detection suffers from.To overcome this problem and make radar cope with the complex multiple interferences scenarios,we propose a multiple mainlobe and/or sidelobe interferences suppression method for dual polarization array radar.Specifically,the proposed method consists of a signal preprocessing based on the proposed angle estimation with degree of polarization(DoP),and a filtering criterion based on the proposed linear constraint.The signal preprocessing provides the accurate estimated parameters of the interference,which contributes to the criterion for null-decoupling in the space-polarization domain of mainlobe.The proposed method can reduce the mainlobe distortion in the space-polarization domain while suppressing the multiple mainlobe and/or sidelobe interferences.The effectiveness of the proposed method is verified by simulations.

关 键 词：multiple interferences suppression dual polarization array radar null-decoupling 

分 类 号：TN973[电子电信—信号与信息处理]