基于分层极化特性的箔条云识别方法  

Chaff clouds recognition method based on layered polarization characteristics

作　　者：李永祯[1] 刘业民 庞晨 黄大通 LI Yongzhen;LIU Yemin;PANG Chen;HUANG Datong(College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China)

机构地区：[1]国防科技大学电子科学学院,湖南长沙410073

出　　处：《系统工程与电子技术》2021年第8期2099-2107,共9页Systems Engineering and Electronics

基　　金：国家自然科学基金(61971429,61490692)资助课题。

摘　　要：箔条作为典型的无源干扰手段,在空中运动扩散和分布取向复杂多变,具有不确定性,其雷达特性相当复杂,即使先进的合成孔径雷达(synthetic aperture radar,SAR)导引头也难以应对。对此,从箔条云的极化特性和空气动力学特性入手,提出一种基于分层极化特性的箔条云干扰识别方法,利用箔条云特有的分层极化特性来识别箔条干扰。所提方法利用干涉原理获取目标的高度维信息,提出特征识别量ρ用于衡量箔条云和舰船目标的极化特性差异,并讨论了所提方法的适用范围。理论分析和仿真结果验证了所提方法的可行性。As a typical passive jamming method,chaff movement in the air and its distribution orientation are complex and changeable,with uncertainties.Its radar characteristics are quite complicated,even the advanced synthetic aperture radar(SAR)seeker is difficult to deal with.Under this situation,a chaff clouds interference recognition method from the polarization characteristics and aerodynamic characteristics of chaff clouds is proposed.The unique layered polarization characteristics of chaff clouds can be used to recognize the chaff jamming.The height dimension information of the target is obtained by using the interference principle,and the feature recognition quantityρis used to measure the polarization difference between the chaff clouds and the ship target.The application scope of the proposed method is also discussed.Theoretical analysis and simulation results verify the feasibility of the proposed method.

关 键 词：极化 箔条云 目标识别 合成孔径雷达导引头 

分 类 号：TN95[电子电信—信号与信息处理]