空间谱在自适应干扰抑制中的应用  

Application of Spatial Spectrum in Adaptive Interference Suppression

作　　者：胡宗恺[1] 吴治霖[1] 迟浩洋 HU Zongkai;WU Zhilin;CHI Haoyang(No.30 Institute of CETC,Chengdu Sichuan 610041,China;Naval University of Engineering,Wuhan Hubei 430032,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041 [2]海军工程大学,湖北武汉430032

出　　处：《通信技术》2023年第11期1248-1252,共5页Communications Technology

基　　金：国家重点研发计划(2020YFC1522905)。

摘　　要：随着信息对抗的发展,敌我双方都开始使用大量雷达和干扰设备,电磁干扰环境日渐复杂,干扰抑制已成为亟须解决的难题。通常使用干扰对消技术与空间自适应干扰抑制技术来进行干扰抑制。针对空间自适应干扰中需要已知信号源波达方向(Direction Of Arrival,DOA)的问题,提出了利用空间谱估计测向技术进行自适应干扰抑制前的DOA估计。该做法不会额外增加系统的通道和硬件资源,且能同时估计多个信源的方向,测向精度高,稳定性好。该系统可以在无须辅助通道和其他干扰源先验信息的条件下,有效消除接收信号中的多个干扰分量,恢复原始通信信号。With the development of information countermeasure,both the enemy and we begin to use a large amount of radar and interference equipment,electromagnetic interference environment is becoming increasingly complex,and interference suppression becomes a problem that needs to be addressed.Interference suppression is usually achieved through the use of interference cancellation techniques and spatial adaptive interference suppression techniques.In response to the problem of needing to know the DOA(Direction of Arrival)of signal sources in spatial adaptive interference,this paper proposes the use of spatial spectrum estimation direction finding techniques for DOA estimation before adaptive interference suppression.This approach does not add additional channels and hardware resources to the system,and it can simultaneously estimate the direction of multiple signal sources with high direction finding accuracy and good stability.The system can effectively eliminate multiple interference components in the received signal and restore the original communication signal without requiring auxiliary channels and a priori information about other interference sources.

关 键 词：空间谱 自适应干扰抑制 波达方向估计 电子对抗 

分 类 号：TN971[电子电信—信号与信息处理]