阵列自由度欠定条件下雷达干扰对消方法及性能分析  

Radar interference cancellation method and performance analysis under condition of incomplete array degree of freedom

作　　者：张嘉毫 李伟 王万田 王衡峰 李亚星 孟进[1] ZHANG Jiahao;LI Wei;WANG Wantian;WANG Hengfeng;LI Yaxing;MENG Jin(National Key Laboratory of Electromagnetic Energy,Institute of Military Electrical Science and Technology,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学军用电气科学与技术研究所电磁能技术全国重点实验室,湖北武汉430033

出　　处：《系统工程与电子技术》2024年第11期3639-3647,共9页Systems Engineering and Electronics

基　　金：国家杰出青年科学基金(52025072);中国科协青年人才托举工程(2021-JCJQ-QT-009);国家自然科学基金面上项目(52177012);全国重点实验室基金(6142217210501,614221720200106)资助课题。

摘　　要：针对雷达、数据链等分时信息系统发射时隙产生的自干扰影响非合作干扰对消权值问题,分析辅助天线阵列自由度影响对消暂态权值收敛特性,提出非合作干扰对消权值保持方法。考虑辅助天线通道与主天线通道异构场景,定量推导非合作干扰对消输出功率稳态性能边界与影响因素。结果表明,权值保持技术避免发射自干扰影响,增加辅助天线数量提升对消比和对消收敛特性。所提方法提升了阵列自由度欠定条件下非合作对消稳态和暂态性能,对于雷达非合作干扰对消设计具有现实指导意义。For the time-division information systems,such as radar,data-link,etc.,the self-interference generated in the transmit time slot affects the weights of non-cooperative interference cancellation.The effects of the degree of freedom of the auxiliary antenna array on the transient convergence performance of the non-cooperative interference cancellation is analyzed.The weight-holding method is proposed for the non-cooperative interference cancellation system.The performance boundary and influence factors of the steady output power of the interference cancellation is derived,in the inhomogeneous main-auxiliary antenna array scenario.The results show that the weight-holding method can avoid the self-interference influence.By increasing the number of the auxiliary antennas,the convergence performance and the interference cancellation performance can be improved.The proposed method enhance both the transient and steady performance of the non-cooperative interference cancellation system on the condition of incomplete antenna array freedom.This paper provides a guidance for the non-cooperative interference cancellation system design for radars.

关 键 词：非合作干扰 干扰对消 雷达抗干扰 收发分时 

分 类 号：TN97[电子电信—信号与信息处理]